http://geekswithblogs.net/mahesh/category/4917.aspx C# en-US Mahesh Singh maheshsingh21@yahoo.co.in Subtext Version 0.0.0.0 http://geekswithblogs.net/mahesh/archive/2008/01/03/vb.net-and-c-syntax-comparison.aspx <style type="text/css"><![CDATA[ table.header { BACKGROUND-COLOR: rgb(230,230,230) } .heading { FONT-SIZE: 20px; COLOR: blue; PADDING-TOP: 5px; LETTER-SPACING: 2pt; BACKGROUND-COLOR: rgb(230,230,230) } .heading2 { FONT-WEIGHT: bold; FONT-SIZE: 16px; COLOR: black; PADDING-TOP: 5px; LETTER-SPACING: 2pt; BACKGROUND-COLOR: rgb(230,230,230) } .comment { COLOR: green; FONT-STYLE: italic } ]]></style> <h1 style="TEXT-ALIGN: center">VB.NET and C# Syntax Comparison</h1> <br /> <br /> <div style="BORDER-RIGHT: rgb(200,200,200) 2px solid; BORDER-TOP: rgb(200,200,200) 2px solid; BORDER-LEFT: rgb(200,200,200) 2px solid; BORDER-BOTTOM: rgb(200,200,200) 2px solid"> <table id="menutable" cellspacing="1" cellpadding="0" width="600" align="center" border="0"> <tbody> <tr valign="top"> <td width="23%"><a href="#progstruct">Program Structure</a><br /> <a href="#comments">Comments</a> <br /> <a href="#datatypes">Data Types</a> <br /> <a href="#constants">Constants</a> <br /> <a href="#enumerations">Enumerations</a> </td> <td width="23%"><a href="#operators">Operators</a><br /> <a href="#choices">Choices</a> <br /> <a href="#loops">Loops</a> <br /> <a href="#arrays">Arrays</a> <br /> <a href="#functions">Functions</a> </td> <td width="31%"><a href="#strings">Strings</a> <br /> <a href="#exceptionhandling">Exception Handling</a><br /> <a href="#namespaces">Namespaces</a> <br /> <a href="#classesinterfaces">Classes / Interfaces</a> <br /> <a href="#constructorsdestructors">Constructors / Destructors</a> </td> <td width="25%"><a href="#objects">Using Objects</a> <br /> <a href="#structs">Structs</a><br /> <a href="#properties">Properties</a> <br /> <a href="#delegatesandevents">Delegates / Events</a> <br /> <a href="#consoleio">Console I/O</a> <br /> <a href="#fileio">File I/O</a> </td> </tr> </tbody> </table> </div> <br /> <div style="BORDER-RIGHT: white 2px solid; BORDER-TOP: white 2px solid; BORDER-LEFT: white 2px solid; BORDER-BOTTOM: white 2px solid"><br /> <div style="BORDER-RIGHT: gray 4px solid; BORDER-TOP: gray 4px solid; FONT-WEIGHT: bold; FONT-SIZE: 15px; BORDER-LEFT: gray 4px solid; WIDTH: 100%; COLOR: gray; BORDER-BOTTOM: gray 4px solid; BACKGROUND-COLOR: silver; TEXT-ALIGN: center"><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/Default.aspx">Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET Interview Questions </a><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/s23_SQL-Server-2005-Interview-Questions.aspx">SQL Server 2005 Interview Questions </a><br /> <br /> </div> </div> <br /> <table width="100%" border="0"> <tbody> <tr align="center"> <td colspan="2"> <table width="100%" border="0" class="header"> <tbody> <tr align="center"> <td class="heading2" width="20%">VB.NET</td> <td class="heading" width="60%"><a name="progstruct"></a> <h3>Program Structure</h3> </td> <td class="heading2" width="20%">C#</td> </tr> </tbody> </table> </td> </tr> <tr valign="top"> <td>Imports System <br /> <br /> Namespace HelloNamespace<br />    Class HelloClass<br />       Overloads Shared Sub <strong>Main</strong>(ByVal args() As String) <br />          Dim name As String = "VB.NET" <br /> <br />          <span class="comment">'If an argument was passed from the command line</span><br />           If args.Length = 1 Then name = args(0) <br /> <br />           Console.WriteLine("Hello, " &amp; name &amp; "!") <br />       End Sub <br />    End Class <br /> End Namespace </td> <td>using System; <br /> <br /> namespace HelloNamespace {<br />    public class HelloClass{<br />       public static void <strong>Main</strong>(string[] args) {<br />          string name = "C#";<br /> <br />          <span class="comment">// If an argument was passed from the command line</span><br />          if (args.Length == 1)<br />             name = args[0];<br /> <br />          Console.WriteLine("Hello, " + name + "!");<br />       }<br />    }<br /> } </td> </tr> <tr> <td colspan="2"> <div style="BORDER-RIGHT: white 2px solid; BORDER-TOP: white 2px solid; BORDER-LEFT: white 2px solid; BORDER-BOTTOM: white 2px solid"><br /> <div style="BORDER-RIGHT: gray 4px solid; BORDER-TOP: gray 4px solid; FONT-WEIGHT: bold; FONT-SIZE: 15px; BORDER-LEFT: gray 4px solid; WIDTH: 100%; COLOR: gray; BORDER-BOTTOM: gray 4px solid; BACKGROUND-COLOR: silver; TEXT-ALIGN: center"><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/Default.aspx">Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET Interview Questions </a><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/s23_SQL-Server-2005-Interview-Questions.aspx">SQL Server 2005 Interview Questions </a><br /> <br /> </div> </div> </td> </tr> <tr align="center"> <td colspan="2"> <table id="Table2" width="100%" border="0" class="header"> <tbody> <tr align="center"> <td class="heading2" width="20%">VB.NET</td> <td class="heading" width="60%"><a name="comments"></a> <h3>Comments</h3> </td> <td class="heading2" width="20%">C#</td> </tr> </tbody> </table> </td> </tr> <tr> <td height="16"><span class="comment">' Single line only</span><br /> <br /> <span class="comment">''' &lt;summary&gt;XML comments&lt;/summary&gt;</span> </td> <td height="16"> <p><span class="comment">// Single line<br /> /* Multiple<br />     line  */<br /> /// &lt;summary&gt;XML comments on single line&lt;/summary&gt;<br /> /** &lt;summary&gt;XML comments on multiple lines&lt;/summary&gt; */</span></p> </td> </tr> <tr> <td colspan="2"> <div style="BORDER-RIGHT: white 2px solid; BORDER-TOP: white 2px solid; BORDER-LEFT: white 2px solid; BORDER-BOTTOM: white 2px solid"><br /> <div style="BORDER-RIGHT: gray 4px solid; BORDER-TOP: gray 4px solid; FONT-WEIGHT: bold; FONT-SIZE: 15px; BORDER-LEFT: gray 4px solid; WIDTH: 100%; COLOR: gray; BORDER-BOTTOM: gray 4px solid; BACKGROUND-COLOR: silver; TEXT-ALIGN: center"><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/Default.aspx">Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET Interview Questions </a><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/s23_SQL-Server-2005-Interview-Questions.aspx">SQL Server 2005 Interview Questions </a><br /> <br /> </div> </div> </td> </tr> <tr align="center"> <td colspan="2"> <table id="Table3" width="100%" border="0" class="header"> <tbody> <tr align="center"> <td class="heading2" width="20%">VB.NET</td> <td class="heading" width="60%"><a name="datatypes"></a> <h3>Data Types</h3> </td> <td class="heading2" width="20%">C#</td> </tr> </tbody> </table> </td> </tr> <tr valign="top"> <td height="80"> <p><span class="comment">Value Types</span><br /> <a target="_blank" href="http://msdn2.microsoft.com/en-us/library/wts33hb3(VS.71).aspx">Boolean</a> <br /> <a href="http://msdn2.microsoft.com/en-us/library/e2ayt412(VS.71).aspx">Byte</a>, SByte<br /> <a href="http://msdn2.microsoft.com/en-us/library/7sx7t66b(VS.71).aspx">Char</a><br /> <a href="http://msdn2.microsoft.com/en-us/library/7tb7bdw6(VS.71).aspx">Short</a>, UShort, Integer, UInteger, <a href="http://msdn2.microsoft.com/en-us/library/y595sc15(VS.71).aspx">Long</a>, ULong<br /> <a href="http://msdn2.microsoft.com/en-us/library/xay7978z(VS.71).aspx">Single</a>, <a href="http://msdn2.microsoft.com/en-us/library/x99xtshc(VS.71).aspx">Double</a><br /> <a href="http://msdn2.microsoft.com/en-us/library/xtba3z33(VS.71).aspx">Decimal</a><br /> <a href="http://msdn2.microsoft.com/en-us/library/3eaydw6e(VS.71).aspx">Date</a></p> <p><span class="comment">Reference Types</span><br /> <a href="http://msdn2.microsoft.com/en-us/library/twcxd6b8(VS.71).aspx">Object</a><br /> <a href="http://msdn2.microsoft.com/en-us/library/thwcx436(VS.71).aspx">String</a><br /> </p> <p><span class="comment">Initializing</span><br /> Dim correct As Boolean = True<br /> Dim b As Byte = &amp;H2A   <span class="comment">'hex</span><br /> Dim o As Byte = &amp;O52   <span class="comment">'octal</span><br /> Dim person As Object = Nothing<br /> Dim name As String = "Dwight"<br /> Dim grade As Char = "B"c<br /> Dim today As Date = #12/31/2007 12:15:00 PM#<br /> Dim amount As Decimal = 35.99@<br /> Dim gpa As Single = 2.9!<br /> Dim pi As Double = 3.14159265<br /> Dim lTotal As Long = 123456L<br /> Dim sTotal As Short = 123S<br /> Dim usTotal As UShort = 123US<br /> Dim uiTotal As UInteger = 123UI<br /> Dim ulTotal As ULong = 123UL </p> <p><span class="comment">Type Information</span><br /> <strong>Dim</strong> x <strong>As</strong> Integer <br /> Console.WriteLine(x.<strong>GetType</strong>())          <span class="comment">' Prints System.Int32</span> <br /> Console.WriteLine(<strong>GetType</strong>(Integer))   <span class="comment">' Prints System.Int32</span> <br /> Console.WriteLine(<strong>TypeName</strong>(x))        <span class="comment">' Prints Integer</span></p> <p><span class="comment">Type Conversion</span><br /> Dim d As Single = 3.5 <br /> Dim i As Integer = <strong>CType</strong>(d, Integer)   <span class="comment">' set to 4 (Banker's rounding)</span><br /> i = <strong>CInt</strong>(d)  <span class="comment">' same result as CType</span><br /> i = <strong>Int</strong>(d)    <span class="comment">' set to 3 (Int function truncates the decimal)</span></p> </td> <td height="80"> <p><span class="comment">Value Types</span><br /> <a href="http://msdn2.microsoft.com/en-us/library/c8f5xwh7(VS.71).aspx">bool</a><br /> <a href="http://msdn2.microsoft.com/en-us/library/5bdb6693(VS.71).aspx">byte</a>, sbyte<br /> <a href="http://msdn2.microsoft.com/en-us/library/x9h8tsay(VS.71).aspx">char</a><br /> <a href="http://msdn2.microsoft.com/en-us/library/ybs77ex4(VS.71).aspx">short</a>, ushort, int, uint, long, ulong<br /> <a href="http://msdn2.microsoft.com/en-us/library/b1e65aza(VS.71).aspx">float</a>, <a href="http://msdn2.microsoft.com/en-us/library/678hzkk9(VS.71).aspx">double</a><br /> <a href="http://msdn2.microsoft.com/en-us/library/364x0z75(VS.71).aspx">decimal</a><br /> DateTime   <span class="comment">(not a built-in C# type)</span></p> <p><span class="comment">Reference Types</span><br /> <a href="http://msdn2.microsoft.com/en-us/library/9kkx3h3c(VS.71).aspx">object</a><br /> <a href="http://msdn2.microsoft.com/en-us/library/362314fe(VS.71).aspx">string</a><br /> </p> <p><span class="comment">Initializing</span><br /> bool correct = true;<br /> byte b = 0x2A;   <span class="comment">// hex</span><br /> <br /> object person = null;<br /> string name = "Dwight";<br /> char grade = 'B';<br /> DateTime today = DateTime.Parse("12/31/2007 12:15:00");<br /> decimal amount = 35.99m;<br /> float gpa = 2.9f;<br /> double pi = 3.14159265;<br /> long lTotal = 123456L;<br /> short sTotal = 123;<br /> ushort usTotal = 123;<br /> uint uiTotal = 123;<br /> ulong ulTotal = 123;<br /> </p> <p><span class="comment">Type Information</span><br /> int x;<br /> Console.WriteLine(x.<strong>GetType</strong>());              <span class="comment">// Prints System.Int32</span><br /> Console.WriteLine(<strong>typeof</strong>(int));               <span class="comment">// Prints System.Int32</span> <br /> Console.WriteLine(x.<strong>GetType().Name</strong>);   <span class="comment">// prints Int32</span> </p> <p><span class="comment">Type Conversion</span> <br /> float d = 3.5f; <br /> int i = <strong>(int)</strong>d;   <span class="comment">// set to 3  (truncates decimal)</span></p> </td> </tr> <tr> <td colspan="2"> <div style="BORDER-RIGHT: white 2px solid; BORDER-TOP: white 2px solid; BORDER-LEFT: white 2px solid; BORDER-BOTTOM: white 2px solid"><br /> <div style="BORDER-RIGHT: gray 4px solid; BORDER-TOP: gray 4px solid; FONT-WEIGHT: bold; FONT-SIZE: 15px; BORDER-LEFT: gray 4px solid; WIDTH: 100%; COLOR: gray; BORDER-BOTTOM: gray 4px solid; BACKGROUND-COLOR: silver; TEXT-ALIGN: center"><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/Default.aspx">Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET Interview Questions </a><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/s23_SQL-Server-2005-Interview-Questions.aspx">SQL Server 2005 Interview Questions </a><br /> <br /> </div> </div> </td> </tr> <tr align="center"> <td colspan="2"> <table id="Table4" width="100%" border="0" class="header"> <tbody> <tr align="center"> <td class="heading2" width="20%">VB.NET</td> <td class="heading" width="60%"><a name="constants"></a> <h3>Constants</h3> </td> <td class="heading2" width="20%">C#</td> </tr> </tbody> </table> </td> </tr> <tr> <td height="16"><strong>Const</strong> MAX_STUDENTS <strong>As</strong> Integer = 25 <p><span class="comment">' Can set to a const or var; may be initialized in a constructor</span><br /> <strong>ReadOnly</strong> MIN_DIAMETER <strong>As</strong> Single = 4.93 </p> </td> <td height="16"><strong>const</strong> int MAX_STUDENTS = 25; <p><span class="comment">// Can set to a const or var; may be initialized in a constructor </span><br /> <strong>readonly</strong> float MIN_DIAMETER = 4.93f; </p> </td> </tr> <tr> <td colspan="2"> <div style="BORDER-RIGHT: white 2px solid; BORDER-TOP: white 2px solid; BORDER-LEFT: white 2px solid; BORDER-BOTTOM: white 2px solid"><br /> <div style="BORDER-RIGHT: gray 4px solid; BORDER-TOP: gray 4px solid; FONT-WEIGHT: bold; FONT-SIZE: 15px; BORDER-LEFT: gray 4px solid; WIDTH: 100%; COLOR: gray; BORDER-BOTTOM: gray 4px solid; BACKGROUND-COLOR: silver; TEXT-ALIGN: center"><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/Default.aspx">Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET Interview Questions </a><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/s23_SQL-Server-2005-Interview-Questions.aspx">SQL Server 2005 Interview Questions </a><br /> <br /> </div> </div> </td> </tr> <tr align="center"> <td colspan="2"> <table id="Table5" width="100%" border="0" class="header"> <tbody> <tr align="center"> <td class="heading2" width="20%">VB.NET</td> <td class="heading" width="60%"><a name="enumerations"></a> <h3>Enumerations</h3> </td> <td class="heading2" width="20%">C#</td> </tr> </tbody> </table> </td> </tr> <tr valign="top"> <td><span><strong>Enum</strong> Action <br />   Start <br />   [Stop]   <span class="comment">' Stop is a reserved word</span><br />   Rewind <br />   Forward <br /> <strong>End Enum</strong> <br /> <br /> <strong>Enum</strong> Status <br />   Flunk = 50 <br />   Pass = 70 <br />   Excel = 90 <br /> <strong>End Enum<br /> </strong><br /> Dim a As Action = Action.Stop <br /> If a &lt;&gt; Action.Start Then _ <br />    Console.WriteLine(a.ToString &amp; " is " &amp; a)     <span class="comment">' Prints "Stop is 1"</span> <br /> <br /> Console.WriteLine(Status.Pass)     <span class="comment">' Prints 70</span> <br /> Console.WriteLine(Status.Pass.ToString())     <span class="comment">' Prints Pass</span></span> </td> <td height="112"><strong>enum</strong> Action {Start, Stop, Rewind, Forward};<br /> <strong>enum</strong> Status {Flunk = 50, Pass = 70, Excel = 90};<br /> <br /> Action a = Action.Stop;<br /> if (a != Action.Start)<br />   Console.WriteLine(a + " is " + (int) a);    <span class="comment">// Prints "Stop is 1"</span><br /> <br /> Console.WriteLine((int) Status.Pass);    <span class="comment">// Prints 70</span> <br /> Console.WriteLine(Status.Pass);      <span class="comment">// Prints Pass</span></td> </tr> <tr> <td colspan="2"> <div style="BORDER-RIGHT: white 2px solid; BORDER-TOP: white 2px solid; BORDER-LEFT: white 2px solid; BORDER-BOTTOM: white 2px solid"><br /> <div style="BORDER-RIGHT: gray 4px solid; BORDER-TOP: gray 4px solid; FONT-WEIGHT: bold; FONT-SIZE: 15px; BORDER-LEFT: gray 4px solid; WIDTH: 100%; COLOR: gray; BORDER-BOTTOM: gray 4px solid; BACKGROUND-COLOR: silver; TEXT-ALIGN: center"><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/Default.aspx">Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET Interview Questions </a><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/s23_SQL-Server-2005-Interview-Questions.aspx">SQL Server 2005 Interview Questions </a><br /> <br /> </div> </div> </td> </tr> <tr align="center"> <td colspan="2"> <table id="Table6" width="100%" border="0" class="header"> <tbody> <tr align="center"> <td class="heading2" width="20%">VB.NET</td> <td class="heading" width="60%"><a name="operators"></a> <h3>Operators</h3> </td> <td class="heading2" width="20%">C#</td> </tr> </tbody> </table> </td> </tr> <tr> <td height="16"> <p><span class="comment">Comparison</span><br /> =  &lt;  &gt;  &lt;=  &gt;=  &lt;&gt;</p> <p><span class="comment">Arithmetic</span><br /> +  -  *  /<br /> Mod<br /> \  <span class="comment">(integer division)</span><br /> ^  <span class="comment">(raise to a power)</span></p> <p><span class="comment">Assignment</span><br /> =  +=  -=  *=  /=  \=  ^=  &lt;&lt;=  &gt;&gt;=  &amp;=</p> <p><span class="comment">Bitwise</span><br /> And   Or   Xor   Not   &lt;&lt;   &gt;&gt;</p> <p><span class="comment">Logical</span><br /> AndAlso   OrElse   And   Or   Xor   Not</p> <p><strong>Note:</strong> AndAlso and OrElse perform short-circuit logical evaluations</p> <p><span class="comment">String Concatenation</span><br /> &amp; </p> </td> <td height="16"> <p><span class="comment">Comparison</span><br /> ==  &lt;  &gt;  &lt;=  &gt;=  !=</p> <p><span class="comment">Arithmetic</span><br /> +  -  *  /<br /> %  <span class="comment">(mod)</span><br /> /  <span class="comment">(integer division if both operands are ints)</span><br /> Math.Pow(x, y)</p> <p><span class="comment">Assignment</span><br /> =  +=  -=  *=  /=   %=  &amp;=  |=  ^=  &lt;&lt;=  &gt;&gt;=  ++  --</p> <p><span class="comment">Bitwise</span><br /> &amp;   |   ^   ~   &lt;&lt;   &gt;&gt;</p> <p><span class="comment">Logical</span><br /> &amp;&amp;   ||   &amp;   |   ^   !</p> <p><strong>Note:</strong> &amp;&amp; and || perform short-circuit logical evaluations</p> <p><span class="comment">String Concatenation</span><br /> +</p> </td> </tr> <tr> <td colspan="2"> <div style="BORDER-RIGHT: white 2px solid; BORDER-TOP: white 2px solid; BORDER-LEFT: white 2px solid; BORDER-BOTTOM: white 2px solid"><br /> <div style="BORDER-RIGHT: gray 4px solid; BORDER-TOP: gray 4px solid; FONT-WEIGHT: bold; FONT-SIZE: 15px; BORDER-LEFT: gray 4px solid; WIDTH: 100%; COLOR: gray; BORDER-BOTTOM: gray 4px solid; BACKGROUND-COLOR: silver; TEXT-ALIGN: center"><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/Default.aspx">Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET Interview Questions </a><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/s23_SQL-Server-2005-Interview-Questions.aspx">SQL Server 2005 Interview Questions </a><br /> <br /> </div> </div> </td> </tr> <tr align="center"> <td colspan="2"> <table id="Table7" width="100%" border="0" class="header"> <tbody> <tr align="center"> <td class="heading2" width="20%">VB.NET</td> <td class="heading" width="60%"><a name="choices"></a> <h3>Choices</h3> </td> <td class="heading2" width="20%">C#</td> </tr> </tbody> </table> </td> </tr> <tr valign="top"> <td height="163"> <p>greeting = <strong>IIf</strong>(age &lt; 20, "What's up?", "Hello")</p> <p><span class="comment">' One line doesn't require "End If"</span><br /> <strong>If</strong> age &lt; 20 <strong>Then</strong> greeting = "What's up?" <br /> <strong>If</strong> age &lt; 20 <strong>Then</strong> greeting = "What's up?" <strong>Else</strong> greeting = "Hello" </p> <p><span class="comment">' Use : to put two commands on same line</span><br /> <strong>If</strong> x &lt;&gt; 100 And y &lt; 5 <strong>Then</strong> x *= 5 <strong>:</strong> y *= 2  </p> <p><span class="comment">' Preferred</span><br /> <strong>If</strong> x &lt;&gt; 100 And y &lt; 5 <strong>Then</strong><br />   x *= 5 <br />   y *= 2<br /> <strong>End If</strong></p> <p><span class="comment">' To break up any long single line use _</span><br /> <strong>If</strong> whenYouHaveAReally &lt; longLine And _ <br />   itNeedsToBeBrokenInto2 &gt; Lines <strong>Then</strong> _<br />   UseTheUnderscore(charToBreakItUp)</p> <p><span class="comment">'</span><strong>If</strong> x &gt; 5 <strong>Then</strong> <br />   x *= y <br /> <strong>ElseIf</strong> x = 5 <strong>Then</strong> <br />   x += y <br /> <strong>ElseIf</strong> x &lt; 10 <strong>Then</strong> <br />   x -= y <br /> <strong>Else</strong> <br />   x /= y <br /> <strong>End If</strong></p> <p><strong>Select Case</strong> color   <span class="comment">' Must be a primitive data type</span><br />   <strong>Case</strong> "pink", "red"<br />     r += 1 <br />   <strong>Case</strong> "blue" <br />     b += 1 <br />   <strong>Case</strong> "green" <br />     g += 1 <br />   <strong>Case Else</strong> <br />     other += 1 <br /> <strong>End Select</strong> </p> </td> <td height="163"> <p>greeting = age &lt; 20 <strong>?</strong> "What's up?" <strong>:</strong> "Hello";</p> <p><strong>if</strong> (age &lt; 20)<br />   greeting = "What's up?";<br /> <strong>else</strong><br />   greeting = "Hello"; </p> <p><span class="comment">// Multiple statements must be enclosed in {}</span><br /> <strong>if</strong> (x != 100 &amp;&amp; y &lt; 5) {   <br />   x *= 5;<br />   y *= 2;<br /> }</p> <br /> <br /> <p><span class="comment">No need for _ or : since ; is used to terminate each statement.</span></p> <p><br /> <br /> <br /> <strong><br /> if</strong> (x &gt; 5) <br />   x *= y; <br /> <strong>else</strong> if (x == 5) <br />   x += y; <br /> <strong>else</strong> if (x &lt; 10) <br />   x -= y; <br /> <strong>else</strong> <br />   x /= y;<br /> </p> <p><br /> <br /> <span class="comment">// Every case must end with break or goto case</span> <br /> <strong>switch</strong> (color) {                          <em><font color="#008000">// Must be integer or string</font></em><br />   <strong>case</strong> "pink":<br />   <strong>case</strong> "red":    r++;    <strong>break;</strong> <br />   <strong>case</strong> "blue":   b++;   <strong>break;<br /> </strong>  <strong>case</strong> "green": g++;   <strong>break;<br /> </strong>  <strong>default:</strong>    other++;  <strong> break;</strong>       <span class="comment">// break necessary on default</span><br /> } </p> </td> </tr> <tr> <td colspan="2"> <div style="BORDER-RIGHT: white 2px solid; BORDER-TOP: white 2px solid; BORDER-LEFT: white 2px solid; BORDER-BOTTOM: white 2px solid"><br /> <div style="BORDER-RIGHT: gray 4px solid; BORDER-TOP: gray 4px solid; FONT-WEIGHT: bold; FONT-SIZE: 15px; BORDER-LEFT: gray 4px solid; WIDTH: 100%; COLOR: gray; BORDER-BOTTOM: gray 4px solid; BACKGROUND-COLOR: silver; TEXT-ALIGN: center"><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/Default.aspx">Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET Interview Questions </a><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/s23_SQL-Server-2005-Interview-Questions.aspx">SQL Server 2005 Interview Questions </a><br /> <br /> </div> </div> </td> </tr> <tr align="center"> <td colspan="2"> <table id="Table8" width="100%" border="0" class="header"> <tbody> <tr align="center"> <td class="heading2" width="20%">VB.NET</td> <td class="heading" width="60%"><a name="loops"></a> <h3>Loops</h3> </td> <td class="heading2" width="20%">C#</td> </tr> </tbody> </table> </td> </tr> <tr> <td valign="top"> <table id="Table1" width="100%" border="0"> <tbody> <tr> <td colspan="2"><span class="comment">Pre-test Loops:</span> </td> </tr> <tr> <td width="50%"><strong>While</strong> c &lt; 10 <br />   c += 1 <br /> <strong>End While</strong> </td> <td width="50%"> <p><strong>Do Until</strong> c = 10 <br />   c += 1 <br /> <strong>Loop</strong></p> </td> </tr> <tr> <td><strong>Do While</strong> c &lt; 10 <br />   c += 1 <br /> <strong>Loop</strong> </td> <td> <p><strong>For</strong> c = 2 <strong>To</strong> 10 <strong>Step</strong> 2 <br />   Console.WriteLine(c) <br /> <strong>Next</strong> </p> </td> </tr> <tr> <td colspan="2"><span class="comment"><br /> Post-test Loops:</span> </td> </tr> <tr> <td><strong>Do</strong> <br />   c += 1 <br /> <strong>Loop While</strong> c &lt; 10 </td> <td><strong>Do</strong> <br />   c += 1 <br /> <strong>Loop Until</strong> c = 10 </td> </tr> </tbody> </table> <p><span class="comment">'  Array or collection looping</span><br /> Dim names As String() = {"Fred", "Sue", "Barney"} <br /> <strong>For Each</strong> s As String<strong> In</strong> names <br />   Console.WriteLine(s) <br /> <strong>Next</strong> </p> <p><span class="comment">' Breaking out of loops</span><br /> Dim i As Integer = 0<br /> While (True)<br />   If (i = 5) Then <strong>Exit While</strong><br />   i += 1<br /> End While <br /> <br /> <br /> </p> <p><span class="comment">' Continue to next iteration</span><br /> For i = 0 To 4<br />   If i &lt; 4 Then <strong>Continue For</strong><br />   Console.WriteLine(i)   <span class="comment">' Only prints 4</span><br /> Next </p> </td> <td valign="top" height="259"><span class="comment">Pre-test Loops:</span>   <p><span class="comment">// no "until" keyword</span><br /> <strong>while</strong> (c &lt; 10) <br />   c++;<br /> <br /> <strong>for</strong> (c = 2; c &lt;= 10; c += 2) <br />   Console.WriteLine(c);</p> <p><br /> <br /> <span class="comment">Post-test Loop:</span><br /> <br /> <strong>do</strong> <br />   c++; <br /> <strong>while</strong> (c &lt; 10);<br /> <br /> <br /> <br /> <span class="comment">// Array or collection looping</span><br /> string[] names = {"Fred", "Sue", "Barney"};<br /> <strong>foreach</strong> (string s <strong>in</strong> names)<br />   Console.WriteLine(s);</p> <p><span class="comment">// Breaking out of loops</span><br /> int i = 0;<br /> while (true) {<br />   if (i == 5)<br />     <strong>break;</strong><br />   i++;<br /> } </p> <p><span class="comment">// Continue to next iteration</span><br /> for (i = 0; i &lt; 5; i++) {<br />   if (i &lt; 4)<br />     <strong>continue;</strong><br />   Console.WriteLine(i);   <span class="comment">// Only prints 4</span><br /> } </p> </td> </tr> <tr> <td colspan="2"> <div style="BORDER-RIGHT: white 2px solid; BORDER-TOP: white 2px solid; BORDER-LEFT: white 2px solid; BORDER-BOTTOM: white 2px solid"><br /> <div style="BORDER-RIGHT: gray 4px solid; BORDER-TOP: gray 4px solid; FONT-WEIGHT: bold; FONT-SIZE: 15px; BORDER-LEFT: gray 4px solid; WIDTH: 100%; COLOR: gray; BORDER-BOTTOM: gray 4px solid; BACKGROUND-COLOR: silver; TEXT-ALIGN: center"><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/Default.aspx">Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET Interview Questions </a><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/s23_SQL-Server-2005-Interview-Questions.aspx">SQL Server 2005 Interview Questions </a><br /> <br /> </div> </div> </td> </tr> <tr align="center"> <td colspan="2"> <table id="Table9" width="100%" border="0" class="header"> <tbody> <tr align="center"> <td class="heading2" width="20%">VB.NET</td> <td class="heading" width="60%"><a name="arrays"></a> <h3>Arrays</h3> </td> <td class="heading2" width="20%">C#</td> </tr> </tbody> </table> </td> </tr> <tr valign="top"> <td height="144"> <p>Dim nums<strong>()</strong> As Integer = {1, 2, 3} <br /> For i As Integer = 0 To nums.Length - 1 <br />   Console.WriteLine(nums(i)) <br /> Next <br /> <br /> <span class="comment">' 4 is the index of the last element, so it holds 5 elements</span><br /> Dim names(4) As String <br /> names(0) = "David"<br /> names(5) = "Bobby"  <span class="comment">' Throws System.IndexOutOfRangeException</span> <br /> <br /> <span class="comment">' Resize the array, keeping the existing values (Preserve is optional)</span><br /> <strong>ReDim Preserve</strong> names(6)<br /> </p> <p><br /> <br /> Dim twoD(rows-1, cols-1) As Single <br /> twoD(2, 0) = 4.5<br /> <br /> Dim jagged<strong>()()</strong> As Integer = { _ <br />   New Integer(4) {}, New Integer(1) {}, New Integer(2) {} } <br /> jagged(0)(4) = 5 </p> </td> <td height="144"> <p>int<strong>[] </strong>nums = {1, 2, 3};<br /> for (int i = 0; i &lt; nums.Length; i++)<br />   Console.WriteLine(nums[i]);<br /> <br /> <br /> <span class="comment">// 5 is the size of the array</span><br /> string[] names = new string[5];<br /> names[0] = "David";<br /> names[5] = "Bobby";   <span class="comment">// Throws System.IndexOutOfRangeException</span> <br /> <br /> <br /> <span class="comment">// C# can't dynamically resize an array.  Just copy into new array.</span><br /> string[] names2 = new string[7]; <br /> Array.Copy(names, names2, names.Length);   <span class="comment">// or names.CopyTo(names2, 0);</span> </p> <p>float<strong>[,]</strong> twoD = new float[rows, cols];<br /> twoD[2,0] = 4.5f;  </p> <p>int<strong>[][]</strong> jagged = new int[3][] { <br />   new int[5], new int[2], new int[3] };<br /> jagged[0][4] = 5; </p> </td> </tr> <tr> <td colspan="2"> <div style="BORDER-RIGHT: white 2px solid; BORDER-TOP: white 2px solid; BORDER-LEFT: white 2px solid; BORDER-BOTTOM: white 2px solid"><br /> <div style="BORDER-RIGHT: gray 4px solid; BORDER-TOP: gray 4px solid; FONT-WEIGHT: bold; FONT-SIZE: 15px; BORDER-LEFT: gray 4px solid; WIDTH: 100%; COLOR: gray; BORDER-BOTTOM: gray 4px solid; BACKGROUND-COLOR: silver; TEXT-ALIGN: center"><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/Default.aspx">Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET Interview Questions </a><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/s23_SQL-Server-2005-Interview-Questions.aspx">SQL Server 2005 Interview Questions </a><br /> <br /> </div> </div> </td> </tr> <tr align="center"> <td colspan="2"> <table id="Table10" width="100%" border="0" class="header"> <tbody> <tr align="center"> <td class="heading2" width="20%">VB.NET</td> <td class="heading" width="60%"><a name="functions"></a> <h3>Functions</h3> </td> <td class="heading2" width="20%">C#</td> </tr> </tbody> </table> </td> </tr> <tr valign="top"> <td width="50%" height="100"> <p><span class="comment">' Pass by value (in, default), reference (in/out), and reference (out)</span>  <br /> <strong>Sub</strong> TestFunction(<strong>ByVal</strong> x As Integer, <strong>ByRef</strong> y As Integer, <strong>ByRef</strong> z As Integer)<br />   x += 1<br />   y += 1 <br />   z = 5 <br /> <strong>End Sub</strong> </p> <p>Dim a = 1, b = 1, c As Integer   <span class="comment">' c set to zero by default</span>  <br /> TestFunction(a, b, c) <br /> Console.WriteLine("{0} {1} {2}", a, b, c)   <span class="comment">' 1 2 5</span></p> <p><span class="comment">' Accept variable number of arguments</span> <br /> <strong>Function</strong> Sum(ByVal <strong>ParamArray</strong> nums <strong>As</strong> Integer()) As Integer <br />   Sum = 0  <br />   For Each i As Integer In nums <br />     Sum += i <br />   Next <br /> <strong>End Function</strong>   <span class="comment">' Or use Return statement like C#</span><br /> <br /> Dim total As Integer = Sum(4, 3, 2, 1)   <span class="comment">' returns 10</span></p> <p><span class="comment">' Optional parameters must be listed last and must have a default value</span> <br /> <strong>Sub</strong> SayHello(ByVal name As String, <strong>Optional</strong> ByVal prefix As String = "")<br />   Console.WriteLine("Greetings, " &amp; prefix &amp; " " &amp; name) <br /> <strong>End Sub</strong><br /> <br /> SayHello("Strangelove", "Dr.")<br /> SayHello("Madonna")<br /> </p> <span></span></td> <td width="50%" height="100"><span class="comment">// Pass by value (in, default), reference (in/out), and reference (out)</span><br /> void TestFunction(int x, <strong>ref</strong> int y, <strong>out</strong> int z) {<br />   x++;  <br />   y++;<br />   z = 5;<br /> } <p>int a = 1, b = 1, c;  <font color="#008000"><em>// c doesn't need initializing</em></font><br /> TestFunction(a, <strong>ref</strong> b, <strong>out</strong> c);<br /> Console.WriteLine("{0} {1} {2}", a, b, c);  <span class="comment">// 1 2 5</span></p> <p><span class="comment">// Accept variable number of arguments</span><br /> int Sum(<strong>params</strong> int[] nums) {<br />   int sum = 0;<br />   foreach (int i in nums)<br />     sum += i;<br />   return sum;<br /> }</p> <p>int total = Sum(4, 3, 2, 1);   <font color="#008000"><em>// returns 10</em></font></p> <p><span class="comment">/* C# doesn't support optional arguments/parameters.  Just create two different versions of the same function. */</span>  <br /> void SayHello(string name, string prefix) {<br />   Console.WriteLine("Greetings, " + prefix + " " + name);<br /> } <br /> <br /> void SayHello(string name) { <br />   SayHello(name, ""); <br /> } </p> </td> </tr> <tr> <td colspan="2"> <div style="BORDER-RIGHT: white 2px solid; BORDER-TOP: white 2px solid; BORDER-LEFT: white 2px solid; BORDER-BOTTOM: white 2px solid"><br /> <div style="BORDER-RIGHT: gray 4px solid; BORDER-TOP: gray 4px solid; FONT-WEIGHT: bold; FONT-SIZE: 15px; BORDER-LEFT: gray 4px solid; WIDTH: 100%; COLOR: gray; BORDER-BOTTOM: gray 4px solid; BACKGROUND-COLOR: silver; TEXT-ALIGN: center"><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/Default.aspx">Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET Interview Questions </a><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/s23_SQL-Server-2005-Interview-Questions.aspx">SQL Server 2005 Interview Questions </a><br /> <br /> </div> </div> </td> </tr> <tr align="center"> <td colspan="2"> <table id="Table11" width="100%" border="0" class="header"> <tbody> <tr align="center"> <td class="heading2" width="20%">VB.NET</td> <td class="heading" width="60%"><a name="strings"></a> <h3>Strings</h3> </td> <td class="heading2" width="20%">C#</td> </tr> </tbody> </table> </td> </tr> <tr> <td valign="top"> <p><span class="comment">Special character constants</span><br /> vbCrLf, vbCr, vbLf, vbNewLine <br /> vbNullString <br /> vbTab <br /> vbBack <br /> vbFormFeed <br /> vbVerticalTab<br /> "" </p> <p><span class="comment">' String concatenation (use &amp; or +)</span> <br /> Dim school As String = "Harding" <strong>&amp;</strong> vbTab<br /> school = school &amp; "University" <span class="comment">' school is "Harding (tab) University"</span> </p> <p><span class="comment">' Chars</span><br /> Dim letter As <strong>Char</strong> = school.Chars(0)   <span class="comment">' letter is H </span><br /> letter = Convert.ToChar(65)                <span class="comment">' letter is A </span><br /> letter = <strong>Chr</strong>(65)                                 <span class="comment">' same thing <br /> </span>Dim word() As Char = school.ToCharArray() <span class="comment">' word holds Harding </span></p> <p><span class="comment">' No string literal operator</span>  <br /> Dim msg As String = "File is c:\temp\x.dat" <br /> <br /> <br /> <br /> </p> <p><span class="comment">' String comparison</span><br /> Dim mascot As String = "Bisons"<br /> If (mascot = "Bisons") Then   <span class="comment">' true</span><br /> If (mascot.<strong>Equals</strong>("Bisons")) Then   <span class="comment">' true</span><br /> If (mascot.<strong>ToUpper</strong>().<strong>Equals</strong>("BISONS")) Then  <span class="comment">' true</span><br /> If (mascot.<strong>CompareTo</strong>("Bisons") = 0) Then   <span class="comment">' true</span></p> <p>Console.WriteLine(mascot.Substring(2, 3)) <span class="comment">' Prints "son"</span> </p> <p><span class="comment">' String matching</span><br /> If ("John 3:16" <strong>Like</strong> "Jo[Hh]? #:*") Then   <span class="comment">'true</span> <br /> <br /> Imports System.Text.RegularExpressions   <span class="comment">' More powerful than Like</span><br /> Dim r As New <strong>Regex</strong>("Jo[hH]. \d:*")<br /> If (r.Match("John 3:16").Success) Then   <span class="comment">'true</span> </p> <p><span class="comment">' My birthday: Oct 12, 1973</span><br /> Dim dt As New DateTime(1973, 10, 12)<br /> Dim s As String = "My birthday: " &amp; dt.ToString("MMM dd, yyyy") </p> <p><span class="comment">' Mutable string <br /> </span>Dim buffer As New System.Text.<strong>StringBuilder</strong>("two ")<br /> buffer.Append("three ")<br /> buffer.Insert(0, "one ")<br /> buffer.Replace("two", "TWO")<br /> Console.WriteLine(buffer)         <span class="comment">' Prints "one TWO three"</span> </p> </td> <td valign="top"> <p><span class="comment">Escape sequences</span><br /> \r    <span class="comment">// carriage-return</span><br /> \n    <span class="comment">// line-feed</span><br /> \t    <span class="comment">// tab</span><br /> \\    <span class="comment">// backslash</span><br /> \"    <span class="comment">// quote</span> <br /> <br /> <br /> <br /> <br /> </p> <p><span class="comment">// String concatenation</span><br /> <strong>string</strong> school = "Harding\t"; <br /> school = school + "University";   <span class="comment">// school is "Harding (tab) University"</span></p> <p><span class="comment">// Chars</span><br /> <strong>char</strong> letter = school[0];            <span class="comment">// letter is H</span> <br /> letter = Convert.ToChar(65);     <span class="comment">// letter is A</span> <br /> letter = <strong>(char)</strong>65;                    <span class="comment">// same thing <br /> </span><strong>char[]</strong> word = school.ToCharArray();   <span class="comment">// word holds Harding</span> </p> <p><span class="comment">// String literal</span> <br /> string msg = <strong>@</strong>"File is c:\temp\x.dat"; <br /> <span class="comment">// same as</span> <br /> string msg = "File is c:\\temp\\x.dat"; <br /> </p> <p><span class="comment">// String comparison</span><br /> string mascot = "Bisons"; <br /> if (mascot == "Bisons")    <span class="comment">// true</span><br /> if (mascot.<strong>Equals</strong>("Bisons"))   <span class="comment">// true</span><br /> if (mascot.<strong>ToUpper</strong>().<strong>Equals</strong>("BISONS"))   <span class="comment">// true</span><br /> if (mascot.<strong>CompareTo</strong>("Bisons") == 0)    <span class="comment">// true</span></p> <p>Console.WriteLine(mascot.<strong>Substring</strong>(2, 3));    <span class="comment">// Prints "son"</span></p> <p><span class="comment">// String matching<br /> // No Like equivalent - use regular expressions</span> <br /> <br /> using System.Text.RegularExpressions;<br /> <strong>Regex</strong> r = new <strong>Regex</strong>(@"Jo[hH]. \d:*");<br /> if (r.Match("John 3:16").Success)   <span class="comment">// true</span> </p> <p><span class="comment">// My birthday: Oct 12, 1973</span><br /> DateTime dt = new DateTime(1973, 10, 12);<br /> string s = "My birthday: " + dt.ToString("MMM dd, yyyy"); </p> <p><span class="comment">// Mutable string</span> <br /> System.Text.<strong>StringBuilder</strong> buffer = new System.Text.<strong>StringBuilder</strong>("two "); <br /> buffer.<strong>Append</strong>("three "); <br /> buffer.<strong>Insert</strong>(0, "one "); <br /> buffer.<strong>Replace</strong>("two", "TWO"); <br /> Console.WriteLine(buffer);     <span class="comment">// Prints "one TWO three"</span></p> </td> </tr> <tr> <td colspan="2"> <div style="BORDER-RIGHT: white 2px solid; BORDER-TOP: white 2px solid; BORDER-LEFT: white 2px solid; BORDER-BOTTOM: white 2px solid"><br /> <div style="BORDER-RIGHT: gray 4px solid; BORDER-TOP: gray 4px solid; FONT-WEIGHT: bold; FONT-SIZE: 15px; BORDER-LEFT: gray 4px solid; WIDTH: 100%; COLOR: gray; BORDER-BOTTOM: gray 4px solid; BACKGROUND-COLOR: silver; TEXT-ALIGN: center"><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/Default.aspx">Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET Interview Questions </a><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/s23_SQL-Server-2005-Interview-Questions.aspx">SQL Server 2005 Interview Questions </a><br /> <br /> </div> </div> </td> </tr> <tr align="center"> <td colspan="2"> <table id="Table12" width="100%" border="0" class="header"> <tbody> <tr align="center"> <td class="heading2" width="20%">VB.NET</td> <td class="heading" width="60%"><a name="exceptionhandling"></a> <h3>Exception Handling</h3> </td> <td class="heading2" width="20%">C#</td> </tr> </tbody> </table> </td> </tr> <tr valign="top"> <td height="96"> <p><span class="comment">' Throw an exception</span><br /> Dim ex As New Exception("Something is really wrong.") <br /> <strong>Throw</strong>  ex  </p> <p><span class="comment">' Catch an exception</span><br /> <strong>Try</strong> <br />   y = 0<br />   x = 10 / y<br /> <strong>Catch</strong> ex As Exception <strong>When</strong> y = 0 <span class="comment">' Argument and When is optional</span><br />   Console.WriteLine(ex.Message) <br /> <strong>Finally</strong> <br />   Beep() <br /> <strong>End Try<br /> </strong></p> <p><span class="comment">' Deprecated unstructured error handling</span><br /> <strong>On</strong> Error <strong>GoTo</strong> MyErrorHandler<br /> ...<br /> MyErrorHandler: Console.WriteLine(Err.Description)<br /> </p> </td> <td height="96"> <p><span class="comment">// Throw an exception</span><br /> Exception up = new Exception("Something is really wrong."); <br /> <strong>throw</strong> up;  <span class="comment">// ha ha </span></p> <p><span class="comment">// Catch an exception</span><br /> <strong>try</strong> { <br />   y = 0; <br />   x = 10 / y; <br /> } <br /> <strong>catch</strong> (Exception ex) {   <span class="comment">// Argument is optional, no "When" keyword</span> <br />   Console.WriteLine(ex.Message); <br /> } <br /> <strong>finally</strong> { <br />   <span class="comment">// Requires reference to the Microsoft.VisualBasic.dll <br />   // assembly (pre .NET Framework v2.0)</span> <br />   Microsoft.VisualBasic.Interaction.Beep(); <br /> } </p> </td> </tr> <tr> <td colspan="2"> <div style="BORDER-RIGHT: white 2px solid; BORDER-TOP: white 2px solid; BORDER-LEFT: white 2px solid; BORDER-BOTTOM: white 2px solid"><br /> <div style="BORDER-RIGHT: gray 4px solid; BORDER-TOP: gray 4px solid; FONT-WEIGHT: bold; FONT-SIZE: 15px; BORDER-LEFT: gray 4px solid; WIDTH: 100%; COLOR: gray; BORDER-BOTTOM: gray 4px solid; BACKGROUND-COLOR: silver; TEXT-ALIGN: center"><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/Default.aspx">Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET Interview Questions </a><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/s23_SQL-Server-2005-Interview-Questions.aspx">SQL Server 2005 Interview Questions </a><br /> <br /> </div> </div> </td> </tr> <tr align="center"> <td colspan="2"> <table id="Table13" width="100%" border="0" class="header"> <tbody> <tr align="center"> <td class="heading2" width="20%">VB.NET</td> <td class="heading" width="60%"><a name="namespaces"></a> <h3>Namespaces</h3> </td> <td class="heading2" width="20%">C#</td> </tr> </tbody> </table> </td> </tr> <tr valign="top"> <td height="163"> <p><strong>Namespace</strong> MyCompany.Product <br />   ...<br /> <strong>End Namespace</strong></p> <p><span class="comment">' or</span></p> <p><strong>Namespace</strong> MyCompany<br />   <strong>Namespace</strong> Product <br />    <br />       ...<br />    <br />   <strong>End Namespace <br /> End Namespace</strong></p> <p><strong>Imports</strong> MyCompany.Product </p> </td> <td height="163"> <p><strong>namespace</strong> MyCompany.Product {<br />   ...<br /> } </p> <p><span class="comment">// or</span> </p> <p><strong>namespace</strong> MyCompany{<br />   <strong>namespace</strong> Product {<br />     <br />       ...<br />     <br />   }<br /> } </p> <p><strong>using</strong> MyCompany.Product; </p> </td> </tr> <tr> <td colspan="2"> <div style="BORDER-RIGHT: white 2px solid; BORDER-TOP: white 2px solid; BORDER-LEFT: white 2px solid; BORDER-BOTTOM: white 2px solid"><br /> <div style="BORDER-RIGHT: gray 4px solid; BORDER-TOP: gray 4px solid; FONT-WEIGHT: bold; FONT-SIZE: 15px; BORDER-LEFT: gray 4px solid; WIDTH: 100%; COLOR: gray; BORDER-BOTTOM: gray 4px solid; BACKGROUND-COLOR: silver; TEXT-ALIGN: center"><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/Default.aspx">Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET Interview Questions </a><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/s23_SQL-Server-2005-Interview-Questions.aspx">SQL Server 2005 Interview Questions </a><br /> <br /> </div> </div> </td> </tr> <tr align="center"> <td colspan="2"> <table id="Table14" width="100%" border="0" class="header"> <tbody> <tr align="center"> <td class="heading2" width="20%">VB.NET</td> <td class="heading" width="60%"><a name="classesinterfaces"></a> <h3>Classes / Interfaces</h3> </td> <td class="heading2" width="20%">C#</td> </tr> </tbody> </table> </td> </tr> <tr valign="top"> <td height="163"> <p><span class="comment">Accessibility keywords</span> <br /> <a href="http://msdn2.microsoft.com/en-us/library/9dc6we3z(VS.71).aspx">Public</a><br /> <a href="http://msdn2.microsoft.com/en-us/library/wx059ey1(VS.71).aspx">Private</a><br /> <a href="http://msdn2.microsoft.com/en-us/library/08w05ey2(VS.71).aspx">Friend</a>                    <br /> <a href="http://msdn2.microsoft.com/en-us/library/8050kawf(VS.71).aspx">Protected</a><br /> Protected Friend<br /> <a href="http://msdn2.microsoft.com/en-us/library/zc2b427x(VS.71).aspx">Shared</a></p> <p><span class="comment">' Inheritance</span><br /> <strong>Class</strong> Game<br />   <strong>Inherits</strong> Competition<br />   ...<br /> <strong>End Class</strong> </p> <p><span class="comment">' Interface definition</span><br /> <strong>Interface</strong> IAlarmClock <br />   ...<br /> <strong>End Interface</strong></p> <p><span class="comment">// Extending an interface </span><br /> <strong>Interface</strong> IAlarmClock <br />   <strong>Inherits</strong> IClock<br />   ...<br /> <strong>End Interface</strong></p> <p><span class="comment">// Interface implementation</span><br /> <strong>Class</strong> WristWatch <br />   <strong>Implements</strong> IAlarmClock, ITimer <br />    ...<br /> <strong>End Class</strong> </p> </td> <td height="163"> <p><span class="comment">Accessibility keywords</span> <br /> <a href="http://msdn2.microsoft.com/en-us/library/yzh058ae(VS.71).aspx">public</a><br /> <a href="http://msdn2.microsoft.com/en-us/library/st6sy9xe(VS.71).aspx">private</a><br /> <a href="http://msdn2.microsoft.com/en-us/library/7c5ka91b(VS.71).aspx">internal</a><br /> <a href="http://msdn2.microsoft.com/en-us/library/bcd5672a(VS.71).aspx">protected</a><br /> protected internal<br /> <a href="http://msdn2.microsoft.com/en-us/library/98f28cdx(VS.71).aspx">static</a></p> <p><span class="comment">// Inheritance</span><br /> <strong>class</strong> Game <strong>:</strong> Competition {<br />   ...<br /> } </p> <p><span class="comment"><br /> // Interface definition</span><br /> <strong>interface</strong> IAlarmClock {<br />   ...<br /> } </p> <p><span class="comment">// Extending an interface </span><br /> <strong>interface</strong> IAlarmClock <strong>:</strong> IClock {<br />   ...<br /> } </p> <p><span class="comment"><br /> // Interface implementation</span><br /> <strong>class</strong> WristWatch <strong>:</strong> IAlarmClock, ITimer {<br />    ...<br /> } </p> </td> </tr> <tr> <td colspan="2"> <div style="BORDER-RIGHT: white 2px solid; BORDER-TOP: white 2px solid; BORDER-LEFT: white 2px solid; BORDER-BOTTOM: white 2px solid"><br /> <div style="BORDER-RIGHT: gray 4px solid; BORDER-TOP: gray 4px solid; FONT-WEIGHT: bold; FONT-SIZE: 15px; BORDER-LEFT: gray 4px solid; WIDTH: 100%; COLOR: gray; BORDER-BOTTOM: gray 4px solid; BACKGROUND-COLOR: silver; TEXT-ALIGN: center"><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/Default.aspx">Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET Interview Questions </a><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/s23_SQL-Server-2005-Interview-Questions.aspx">SQL Server 2005 Interview Questions </a><br /> <br /> </div> </div> </td> </tr> <tr align="center"> <td colspan="2"> <table id="Table15" width="100%" border="0" class="header"> <tbody> <tr align="center"> <td class="heading2" width="20%">VB.NET</td> <td class="heading" width="60%"><a name="constructorsdestructors"></a> <h3>Constructors / Destructors</h3> </td> <td class="heading2" width="20%">C#</td> </tr> </tbody> </table> </td> </tr> <tr valign="top"> <td height="176"><strong>Class</strong> SuperHero<br />   Private _powerLevel As Integer <br /> <br />   Public Sub <strong>New</strong>() <br />     _powerLevel = 0 <br />   End Sub <br /> <br />   Public Sub <strong>New</strong>(ByVal powerLevel As Integer) <br />     Me._powerLevel = powerLevel <br />   End Sub<br /> <br />   Protected Overrides Sub <strong>Finalize</strong>() <br />    <span class="comment">' Desctructor code to free unmanaged resources</span> <br />     MyBase.Finalize() <br />   End Sub<br /> <strong>End Class</strong> </td> <td height="176"> <p><strong>class</strong> SuperHero {<br />   private int _powerLevel;<br /> <br />   public SuperHero() {<br />      _powerLevel = 0;<br />   }<br /> <br />   public SuperHero(int powerLevel) {<br />     this._powerLevel= powerLevel; <br />   }<br /> <br />   <strong>~</strong>SuperHero() {<br />     <span class="comment">// Destructor code to free unmanaged resources.<br />     // Implicitly creates a Finalize method</span><br />   }<br /> }</p> </td> </tr> <tr> <td colspan="2"> <div style="BORDER-RIGHT: white 2px solid; BORDER-TOP: white 2px solid; BORDER-LEFT: white 2px solid; BORDER-BOTTOM: white 2px solid"><br /> <div style="BORDER-RIGHT: gray 4px solid; BORDER-TOP: gray 4px solid; FONT-WEIGHT: bold; FONT-SIZE: 15px; BORDER-LEFT: gray 4px solid; WIDTH: 100%; COLOR: gray; BORDER-BOTTOM: gray 4px solid; BACKGROUND-COLOR: silver; TEXT-ALIGN: center"><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/Default.aspx">Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET Interview Questions </a><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/s23_SQL-Server-2005-Interview-Questions.aspx">SQL Server 2005 Interview Questions </a><br /> <br /> </div> </div> </td> </tr> <tr align="center"> <td colspan="2"> <table id="Table16" width="100%" border="0" class="header"> <tbody> <tr align="center"> <td class="heading2" width="20%">VB.NET</td> <td class="heading" width="60%"><a name="objects"></a> <h3>Using Objects</h3> </td> <td class="heading2" width="20%">C#</td> </tr> </tbody> </table> </td> </tr> <tr valign="top"> <td height="163"> <p>Dim hero As SuperHero = New SuperHero<br /> <span class="comment">' or</span><br /> Dim hero As New SuperHero </p> <p><strong>With</strong> hero <br />   .Name = "SpamMan" <br />   .PowerLevel = 3 <br /> <strong>End With</strong> <br /> </p> <p>hero.Defend("Laura Jones") <br /> hero.Rest()     <span class="comment">' Calling Shared method</span><br /> <span class="comment">' or</span><br /> SuperHero.Rest() </p> <p>Dim hero2 As SuperHero = hero  <span class="comment">' Both reference the same object</span> <br /> hero2.Name = "WormWoman" <br /> Console.WriteLine(hero.Name)   <span class="comment">' Prints WormWoman</span></p> <p>hero = <strong>Nothing</strong>    <span class="comment">' Free the object</span> </p> <p>If hero <strong>Is</strong> <strong>Nothing</strong> Then _ <br />   hero = New SuperHero</p> <p>Dim obj As Object = New SuperHero <br /> If <strong>TypeOf</strong> obj <strong>Is</strong> SuperHero Then _<br />   Console.WriteLine("Is a SuperHero object.") </p> <p><span class="comment">' Mark object for quick disposal</span><br /> <strong>Using</strong> reader As StreamReader = File.OpenText("test.txt")<br />   Dim line As String = reader.ReadLine()<br />   While Not line Is Nothing<br />     Console.WriteLine(line)<br />     line = reader.ReadLine()<br />   End While<br /> <strong>End Using</strong> </p> </td> <td height="163"> <p>SuperHero hero = new SuperHero(); <br /> <br /> <br /> <br /> </p> <p><span class="comment">// No "With" construct</span><br /> hero.Name = "SpamMan"; <br /> hero.PowerLevel = 3; <br /> <br /> <br /> </p> <p>hero.Defend("Laura Jones");<br /> SuperHero.Rest();   <span class="comment">// Calling static method</span></p> <p><br /> <br /> SuperHero hero2 = hero;   <span class="comment">// Both reference the same object</span> <br /> hero2.Name = "WormWoman"; <br /> Console.WriteLine(hero.Name);   <span class="comment">// Prints WormWoman</span> </p> <p>hero = <strong>null</strong> ;   <span class="comment">// Free the object</span> </p> <p>if (hero == <strong>null</strong>)<br />   hero = new SuperHero();</p> <p>Object obj = new SuperHero(); <br /> if (obj <strong>is</strong> SuperHero) <br />   Console.WriteLine("Is a SuperHero object."); </p> <span class="comment">// Mark object for quick disposal</span><br /> <strong>using</strong> (StreamReader reader = File.OpenText("test.txt")) {<br />   string line;<br />   while ((line = reader.ReadLine()) != null)<br />     Console.WriteLine(line);<br /> } </td> </tr> <tr> <td colspan="2"> <div style="BORDER-RIGHT: white 2px solid; BORDER-TOP: white 2px solid; BORDER-LEFT: white 2px solid; BORDER-BOTTOM: white 2px solid"><br /> <div style="BORDER-RIGHT: gray 4px solid; BORDER-TOP: gray 4px solid; FONT-WEIGHT: bold; FONT-SIZE: 15px; BORDER-LEFT: gray 4px solid; WIDTH: 100%; COLOR: gray; BORDER-BOTTOM: gray 4px solid; BACKGROUND-COLOR: silver; TEXT-ALIGN: center"><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/Default.aspx">Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET Interview Questions </a><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/s23_SQL-Server-2005-Interview-Questions.aspx">SQL Server 2005 Interview Questions </a><br /> <br /> </div> </div> </td> </tr> <tr align="center"> <td colspan="2"> <table id="Table17" width="100%" border="0" class="header"> <tbody> <tr align="center"> <td class="heading2" width="20%">VB.NET</td> <td class="heading" width="60%"><a name="structs"></a> <h3>Structs</h3> </td> <td class="heading2" width="20%">C#</td> </tr> </tbody> </table> </td> </tr> <tr valign="top"> <td height="256"> <p><strong>Structure</strong> StudentRecord <br />   Public name As String <br />   Public gpa As Single <br /> <br />   Public Sub New(ByVal name As String, ByVal gpa As Single) <br />     Me.name = name <br />     Me.gpa = gpa <br />   End Sub <br /> <strong>End Structure</strong></p> <p>Dim stu As StudentRecord = New StudentRecord("Bob", 3.5) <br /> Dim stu2 As StudentRecord = stu   <br /> <br /> stu2.name = "Sue" <br /> Console.WriteLine(stu.name)    <span class="comment">' Prints Bob</span> <br /> Console.WriteLine(stu2.name)  <span class="comment">' Prints Sue</span></p> </td> <td height="256"><strong>struct</strong> StudentRecord {<br />   public string name;<br />   public float gpa;<br /> <br />   public StudentRecord(string name, float gpa) {<br />     this.name = name;<br />     this.gpa = gpa;<br />   }<br /> }<br /> <p>StudentRecord stu = new StudentRecord("Bob", 3.5f);<br /> StudentRecord stu2 = stu;  <br /> <br /> stu2.name = "Sue";<br /> Console.WriteLine(stu.name);    <span class="comment">// Prints Bob</span><br /> Console.WriteLine(stu2.name);   <span class="comment">// Prints Sue</span></p> </td> </tr> <tr> <td colspan="2"> <div style="BORDER-RIGHT: white 2px solid; BORDER-TOP: white 2px solid; BORDER-LEFT: white 2px solid; BORDER-BOTTOM: white 2px solid"><br /> <div style="BORDER-RIGHT: gray 4px solid; BORDER-TOP: gray 4px solid; FONT-WEIGHT: bold; FONT-SIZE: 15px; BORDER-LEFT: gray 4px solid; WIDTH: 100%; COLOR: gray; BORDER-BOTTOM: gray 4px solid; BACKGROUND-COLOR: silver; TEXT-ALIGN: center"><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/Default.aspx">Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET Interview Questions </a><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/s23_SQL-Server-2005-Interview-Questions.aspx">SQL Server 2005 Interview Questions </a><br /> <br /> </div> </div> </td> </tr> <tr align="center"> <td colspan="2"> <table id="Table18" width="100%" border="0" class="header"> <tbody> <tr align="center"> <td class="heading2" width="20%">VB.NET</td> <td class="heading" width="60%"><a name="properties"></a> <h3>Properties</h3> </td> <td class="heading2" width="20%">C#</td> </tr> </tbody> </table> </td> </tr> <tr valign="top"> <td width="50%" height="134"> <p>Private _size As Integer<br /> <br /> Public <strong>Property</strong> Size() As Integer<br />   <strong>Get</strong> <br />     Return _size <br />   <strong>End Get</strong> <br />   <strong>Set</strong> (ByVal Value As Integer) <br />     If Value &lt; 0 Then <br />       _size = 0 <br />     Else <br />       _size = Value <br />     End If <br />   <strong>End Set</strong> <br /> <strong>End Property</strong></p> <p>foo.Size += 1</p> </td> <td width="50%" height="134">private int _size;<br /> <br /> public int Size { <br />   <strong>get</strong> { <br />     return _size; <br />   } <br />   <strong>set</strong> { <br />     if (value &lt; 0) <br />       _size = 0; <br />     else <br />       _size = value; <br />   } <br /> } <p><br /> foo.Size++; </p> </td> </tr> <tr> <td colspan="2"> <div style="BORDER-RIGHT: white 2px solid; BORDER-TOP: white 2px solid; BORDER-LEFT: white 2px solid; BORDER-BOTTOM: white 2px solid"><br /> <div style="BORDER-RIGHT: gray 4px solid; BORDER-TOP: gray 4px solid; FONT-WEIGHT: bold; FONT-SIZE: 15px; BORDER-LEFT: gray 4px solid; WIDTH: 100%; COLOR: gray; BORDER-BOTTOM: gray 4px solid; BACKGROUND-COLOR: silver; TEXT-ALIGN: center"><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/Default.aspx">Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET Interview Questions </a><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/s23_SQL-Server-2005-Interview-Questions.aspx">SQL Server 2005 Interview Questions </a><br /> <br /> </div> </div> </td> </tr> <tr align="center"> <td colspan="2"> <table id="Table19" width="100%" border="0" class="header"> <tbody> <tr align="center"> <td class="heading2" width="20%">VB.NET</td> <td class="heading" width="60%"><a name="delegatesandevents"></a> <h3>Delegates / Events</h3> </td> <td class="heading2" width="20%">C#</td> </tr> </tbody> </table> </td> </tr> <tr valign="top"> <td width="50%" height="134"> <p><strong>Delegate</strong> Sub MsgArrivedEventHandler(ByVal message As String)</p> <p><strong>Event</strong> MsgArrivedEvent As MsgArrivedEventHandler</p> <p><span class="comment">' or to define an event which declares a delegate implicitly</span><br /> <strong>Event</strong> MsgArrivedEvent(ByVal message As String) </p> <p><strong>AddHandler</strong> MsgArrivedEvent, <strong>AddressOf</strong> My_MsgArrivedCallback <br /> <span class="comment">' Won't throw an exception if obj is Nothing<br /> </span><strong>RaiseEvent</strong> MsgArrivedEvent("Test message") <br /> <strong>RemoveHandler</strong> MsgArrivedEvent, <strong>AddressOf</strong> My_MsgArrivedCallback<br /> </p> <p>Imports System.Windows.Forms</p> <p>Dim <strong>WithEvents</strong> MyButton As Button   <span class="comment">' WithEvents can't be used on local variable</span><br /> MyButton = New Button</p> <p>Private Sub MyButton_Click(ByVal sender As System.Object, _<br />   ByVal e As System.EventArgs) <strong>Handles</strong> MyButton.Click <br />   MessageBox.Show(Me, "Button was clicked", "Info", _<br />     MessageBoxButtons.OK, MessageBoxIcon.Information) <br /> End Sub</p> </td> <td width="50%" height="134"> <p><strong>delegate</strong> void MsgArrivedEventHandler(string message); </p> <p><strong>event</strong> MsgArrivedEventHandler MsgArrivedEvent;</p> <p><span class="comment">// Delegates must be used with events in C#</span><br /> <br /> <br /> MsgArrivedEvent <strong>+=</strong> new MsgArrivedEventHandler(My_MsgArrivedEventCallback);<br /> MsgArrivedEvent("Test message");    <span class="comment">// Throws exception if obj is null</span><br /> MsgArrivedEvent <strong>-=</strong> new MsgArrivedEventHandler(My_MsgArrivedEventCallback);</p> <p><br /> <br /> using System.Windows.Forms;</p> <p>Button MyButton = new Button(); <br /> MyButton.Click += new System.EventHandler(MyButton_Click);</p> <p>private void MyButton_Click(object sender, System.EventArgs e) { <br />   MessageBox.Show(this, "Button was clicked", "Info", <br />     MessageBoxButtons.OK, MessageBoxIcon.Information); <br /> }</p> </td> </tr> <tr> <td colspan="2"> <div style="BORDER-RIGHT: white 2px solid; BORDER-TOP: white 2px solid; BORDER-LEFT: white 2px solid; BORDER-BOTTOM: white 2px solid"><br /> <div style="BORDER-RIGHT: gray 4px solid; BORDER-TOP: gray 4px solid; FONT-WEIGHT: bold; FONT-SIZE: 15px; BORDER-LEFT: gray 4px solid; WIDTH: 100%; COLOR: gray; BORDER-BOTTOM: gray 4px solid; BACKGROUND-COLOR: silver; TEXT-ALIGN: center"><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/Default.aspx">Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET Interview Questions </a><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/s23_SQL-Server-2005-Interview-Questions.aspx">SQL Server 2005 Interview Questions </a><br /> <br /> </div> </div> </td> </tr> <tr align="center"> <td colspan="2"> <table id="Table20" width="100%" border="0" class="header"> <tbody> <tr align="center"> <td class="heading2" width="20%">VB.NET</td> <td class="heading" width="60%"><a name="#consoleio"></a> <h3>Console I/O</h3> </td> <td class="heading2" width="20%">C#</td> </tr> </tbody> </table> </td> </tr> <tr valign="top"> <td width="50%" height="163"> <p>Console.Write("What's your name? ") <br /> Dim name As String = Console.ReadLine() <br /> Console.Write("How old are you? ") <br /> Dim age As Integer = Val(Console.ReadLine()) <br /> Console.WriteLine("{0} is {1} years old.", name, age)  <br /> <span class="comment">' or</span> <br /> Console.WriteLine(name &amp; " is " &amp; age &amp; " years old.") <br /> <br /> Dim c As Integer <br /> c = Console.Read()    <span class="comment">' Read single char</span> <br /> Console.WriteLine(c)   <span class="comment">' Prints 65 if user enters "A"</span> </p> </td> <td width="50%" height="163"> <p>Console.Write("What's your name? ");<br /> string name = Console.ReadLine();<br /> Console.Write("How old are you? ");<br /> int age = Convert.ToInt32(Console.ReadLine());<br /> Console.WriteLine("{0} is {1} years old.", name, age);<br /> <span class="comment">// or</span><br /> Console.WriteLine(name + " is " + age + " years old."); </p> <p><br /> int c = Console.Read();  <span class="comment">// Read single char</span><br /> Console.WriteLine(c);    <span class="comment">// Prints 65 if user enters "A"</span></p> </td> </tr> <tr> <td colspan="2"> <div style="BORDER-RIGHT: white 2px solid; BORDER-TOP: white 2px solid; BORDER-LEFT: white 2px solid; BORDER-BOTTOM: white 2px solid"><br /> <div style="BORDER-RIGHT: gray 4px solid; BORDER-TOP: gray 4px solid; FONT-WEIGHT: bold; FONT-SIZE: 15px; BORDER-LEFT: gray 4px solid; WIDTH: 100%; COLOR: gray; BORDER-BOTTOM: gray 4px solid; BACKGROUND-COLOR: silver; TEXT-ALIGN: center"><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/Default.aspx">Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET Interview Questions </a><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/s23_SQL-Server-2005-Interview-Questions.aspx">SQL Server 2005 Interview Questions </a><br /> <br /> </div> </div> </td> </tr> <tr align="center"> <td colspan="2"> <table id="Table21" width="100%" border="0" class="header"> <tbody> <tr align="center"> <td class="heading2" width="20%">VB.NET</td> <td class="heading" width="60%"><a name="fileio"></a> <h3>File I/O</h3> </td> <td class="heading2" width="20%">C#</td> </tr> </tbody> </table> </td> </tr> <tr valign="top"> <td width="50%" height="163"> <p>Imports System.IO</p> <p><span class="comment">' Write out to text file</span><br /> Dim writer As <strong>StreamWriter</strong> = File.CreateText("c:\myfile.txt") <br /> writer.WriteLine("Out to file.") <br /> writer.Close() </p> <p><span class="comment">' Read all lines from text file</span><br /> Dim reader As <strong>StreamReader</strong> = File.OpenText("c:\myfile.txt") <br /> Dim line As String = reader.ReadLine() <br /> While Not line Is Nothing <br />   Console.WriteLine(line) <br />   line = reader.ReadLine() <br /> End While <br /> reader.Close() </p> <p><span class="comment">' Write out to binary file</span><br /> Dim str As String = "Text data" <br /> Dim num As Integer = 123 <br /> Dim binWriter As New <strong>BinaryWriter</strong>(File.OpenWrite("c:\myfile.dat"))  <br /> binWriter.Write(str)  <br /> binWriter.Write(num) <br /> binWriter.Close()</p> <p><span class="comment">' Read from binary file</span><br /> Dim binReader As New <strong>BinaryReader</strong>(File.OpenRead("c:\myfile.dat")) <br /> str = binReader.ReadString() <br /> num = binReader.ReadInt32() <br /> binReader.Close()</p> </td> <td width="50%" height="163"> <p>using System.IO;</p> <p><span class="comment">// Write out to text file</span><br /> <strong>StreamWriter</strong> writer = File.CreateText("c:\\myfile.txt"); <br /> writer.WriteLine("Out to file."); <br /> writer.Close(); </p> <p><span class="comment">// Read all lines from text file</span><br /> <strong>StreamReader</strong> reader = File.OpenText("c:\\myfile.txt"); <br /> string line = reader.ReadLine(); <br /> while (line != null) {<br />   Console.WriteLine(line); <br />   line = reader.ReadLine(); <br /> } <br /> reader.Close(); </p> <p><span class="comment">// Write out to binary file</span><br /> string str = "Text data"; <br /> int num = 123; <br /> <strong>BinaryWriter</strong> binWriter = new BinaryWriter(File.OpenWrite("c:\\myfile.dat")); <br /> binWriter.Write(str); <br /> binWriter.Write(num); <br /> binWriter.Close(); </p> <p><span class="comment">// Read from binary file</span><br /> <strong>BinaryReader</strong> binReader = new BinaryReader(File.OpenRead("c:\\myfile.dat")); <br /> str = binReader.ReadString(); <br /> num = binReader.ReadInt32(); <br /> binReader.Close();</p> </td> </tr> <tr> <td colspan="2"> <div style="BORDER-RIGHT: white 2px solid; BORDER-TOP: white 2px solid; BORDER-LEFT: white 2px solid; BORDER-BOTTOM: white 2px solid"><br /> <div style="BORDER-RIGHT: gray 4px solid; BORDER-TOP: gray 4px solid; FONT-WEIGHT: bold; FONT-SIZE: 15px; BORDER-LEFT: gray 4px solid; WIDTH: 100%; COLOR: gray; BORDER-BOTTOM: gray 4px solid; BACKGROUND-COLOR: silver; TEXT-ALIGN: center"><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/Default.aspx">Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET Interview Questions </a><br /> <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c2_ASP.NET-Interview-Questions.aspx">ASP.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/c1_.NET-Interview-Questions.aspx">.NET 2.0 Interview Questions </a>| <a style="FONT-WEIGHT: bold; FONT-SIZE: 15px; COLOR: blue" target="_blank" href="http://www.thinkinterview.com/Interview-Questions/s23_SQL-Server-2005-Interview-Questions.aspx">SQL Server 2005 Interview Questions </a><br /> <br /> </div> </div> <p> </p> <p> </p> <p>Source:    <font face="Arial"><a href="http://www.harding.edu/fmccown/vbnet_csharp_comparison.html"><strong>http://www.harding.edu/fmccown/vbnet_csharp_comparison.html</strong></a></font></p> </td> </tr> </tbody> </table><p><a href="http://www.pheedo.com/click.phdo?x=6cda6ad746d942b9a1110d0715a4fa12&u=118230"><img src="http://www.pheedo.com/img.phdo?x=6cda6ad746d942b9a1110d0715a4fa12&u=118230" border="0"/></a></p><iframe src="http://ads.geekswithblogs.net/a.aspx?ZoneID=5&amp;Task=Get&amp;PageID=31016&amp;SiteID=1" width=1 height=1 Marginwidth=0 Marginheight=0 Hspace=0 Vspace=0 Frameborder=0 Scrolling=No> <script language='javascript1.1' src="http://ads.geekswithblogs.net/a.aspx?ZoneID=5&amp;Task=Get&amp;Browser=NETSCAPE4&amp;NoCache=True&PageID=31016&amp;SiteID=1"></script> <noscript><a href="http://ads.geekswithblogs.net/a.aspx?ZoneID=5&amp;Task=Click&amp;Mode=HTML&amp;SiteID=1&amp;PageID=31016" target="_blank"> <img src="http://ads.geekswithblogs.net/a.aspx?ZoneID=5&amp;Task=Get&amp;Mode=HTML&amp;SiteID=1&amp;PageID=31016" width="1" height="1" border="0" alt=""></a> </noscript> </iframe> <img src="http://geekswithblogs.net/mahesh/aggbug/118230.aspx" width="1"