C#

string.Format input string was not in a correct format

Sglima — Mon, 19 Dec 2011 15:46:18 GMT

If you have a "{" or "}" inside a string when using string.format you will get the error mentioned in the title.

To fix this you must double the charater.

Error Example:

string teste = string.Format(" This is a {teste} {0} ", mystring);

Correct Example:

string teste = string.Format(" This is a {{teste}} {0} ", mystring);v

How to execute a javascript function every time an updatepanel executes an async postback

Sglima — Tue, 20 Sep 2011 09:57:32 GMT

Sys.WebForms.PageRequestManager.getInstance().add_endRequest(refresh);

function refresh() { //Your code here; }

</script>

Source

How to: Upload a file using FTP

Sglima — Thu, 07 Oct 2010 16:31:42 GMT

FileInfo fileInf = new FileInfo("c:\myfile.txt");

FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://myFTPSite/myfile.txt"));

reqFTP.Credentials = new NetworkCredential("myUser","myPassword", "myFTPDomain");

reqFTP.KeepAlive = false;
reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
reqFTP.UseBinary = true;

reqFTP.ContentLength = fileInf.Length;

int buffLength = 2048;
byte[] buff = new byte[buffLength];
int contentLen;

FileStream fs = fileInf.OpenRead();

try
{
    Stream strm = reqFTP.GetRequestStream();
    contentLen = fs.Read(buff, 0, buffLength);
    while (contentLen != 0)
    {
        strm.Write(buff, 0, contentLen);
        contentLen = fs.Read(buff, 0, buffLength);
    }
    strm.Close();
    fs.Close();
}
catch (Exception ex)
{
    Console.WriteLine(ex.Message);
}

Enjoy :)

How to: Download a file using FTP

Sglima — Thu, 07 Oct 2010 16:24:16 GMT

FileStream outputStream = new FileStream("c:\myfilefolder\file.txt");
FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://myFTPSite/file.txt"));

reqFTP.Method = WebRequestMethods.Ftp.DownloadFile;
reqFTP.UseBinary = true;
reqFTP.Credentials = new NetworkCredential("myUser","MyPassword","FTPDomain");

FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
Stream ftpStream = response.GetResponseStream();

int bufferSize = 2048;
int readCount;
byte[] buffer = new byte[bufferSize];

readCount = ftpStream.Read(buffer, 0, bufferSize);
while (readCount > 0)
{
outputStream.Write(buffer, 0, readCount);
readCount = ftpStream.Read(buffer, 0, bufferSize);
}

ftpStream.Close();
outputStream.Close();
response.Close();

Enjoy :)

How to: List Files from an FTP Location

Sglima — Thu, 07 Oct 2010 16:17:00 GMT

FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://myFTPURL/"));
reqFTP.UseBinary = true;
reqFTP.Credentials = new NetworkCredential("myUser", "myPassword", "FTPDomain");

reqFTP.Method = WebRequestMethods.Ftp.ListDirectory;

WebResponse response = reqFTP.GetResponse();
StreamReader reader = new StreamReader(response.GetResponseStream());

string line = reader.ReadLine();
while (line != null)
{
line = reader.ReadLine();
}

reader.Close();
response.Close();

Enjoy :)

How to: Export A Class to XML

Sglima — Tue, 17 Aug 2010 15:54:40 GMT

The scenario:

Imagine someone asks you to create an XML file with some data structure.

The approuch:

There are several ways to achieve this, the fastest and less time comsuming is to create a class structure that represents the XML structure you need, fill in with the data and them serialize it to a string and save it to a file.

The Implementation:

Lets say you need a single node, followed by an array of nodes.

Class Definition:

public class MyNode
{

[XmlElementAttribute("code")]
public int code;
[XmlElementAttribute("description")]
public string description;

}

public class Item
{

[XmlAttribute("name")]
public string name;
[XmlAttribute("value")]
public string value;

}

[XmlRootAttribute("myClass", IsNullable = false, Namespace = "")]
public class MyClass
{

public MyClass()
{

myNode = new MyNode();

}

[XmlElementAttribute("myNode")]
public MyNode myNode;

[XmlArrayAttribute("myArray")]
public List<Item> myArray = new List<Item>();

public override string ToString()
{

try
{

string xmlString = null;
MemoryStream memoryStream = new MemoryStream();
XmlSerializer xs = new XmlSerializer(typeof(MyClass));
XmlTextWriter xmlTextWriter = new XmlTextWriter(memoryStream, Encoding.UTF8);
xs.Serialize(xmlTextWriter, this);
memoryStream = (MemoryStream)xmlTextWriter.BaseStream;
xmlString = UTF8ByteArrayToString(memoryStream.ToArray());
return xmlString;

}
catch
{

return string.Empty;

}

private static string UTF8ByteArrayToString(byte[] characters)
{

UTF8Encoding encoding = new UTF8Encoding();
string constructedString = encoding.GetString(characters);
return (constructedString);

}

private static Byte[] StringToUTF8ByteArray(string pXmlString)
{

UTF8Encoding encoding = new UTF8Encoding();
byte[] byteArray = encoding.GetBytes(pXmlString);
return byteArray;

}

public static MyClass DeserializeObject(string xml)
{

XmlSerializer xs = new XmlSerializer(typeof(MyClass));
MemoryStream memoryStream = new MemoryStream(StringToUTF8ByteArray(xml));
XmlTextWriter xmlTextWriter = new XmlTextWriter(memoryStream, Encoding.UTF8);
return (MyClass)xs.Deserialize(memoryStream);

}

Now, to use these classes:

public static string myFunction()
{

MyClass fido = new MyClass();
fido.myNode.code = 1;
fido.myNode.description="sample text";
myArray.Add(new Item{name="name1", value="value1"});
myArray.Add(new Item{name="name2", value="value2"});
return fido.ToString();

}

Executing this you will get an string as such:

<?xml version="1.0" encoding="utf-8"?>
<myClass xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">

<code>1</code>
<description>sample text</description>

</myNode>
<myArray>

</myArray>

</myClass>

Using the string returned from "fido.ToString()" in the method DeserializeObject will get you the original values for the object.

Hope this can be helpfull,

Enjoy :)

Linq error: MSDTC on server 'servername' is unavailable

Sglima — Wed, 11 Aug 2010 11:39:50 GMT

Occasionally an application that I am working on throws the above error...

After trying to fix my code for a bit, and not finding the problem I googled a bit and discovered that this error is caused by a windows service that must be running.

So, if you ever encounter this error, you must turn on the 'Distributed Transaction Coordinator' in order to solve it.

Hope this helps.

Original source: http://geekswithblogs.net/narent/archive/2006/10/09/93544.aspx

How to: Invoke a method by name

Sglima — Mon, 31 May 2010 13:41:50 GMT

Type myType = typeof(MyClass);

string methodName = "methodNameAsString";

MethodInfo myTypeGetMethod = myType.GetMethod(methodName);

MyClass obj = new MyClass();

object[] parms = { 123, "string test"};

myTypeGetMethod.Invoke(obj, args);

WTF #4

Sglima — Tue, 23 Mar 2010 17:17:20 GMT

Well... I cant really express my feelings for this kind of programming...

The WTF way:

DateTime myNewDate = DateTime.Parse((myOldDate.Year - 1).ToString() + "-" + myOldDate.Month.ToString() + "-" + myOldDate.Day.ToString());

The right way:

DateTime myNewDate = myOldDate.Date.AddYears(-1);

WTF #3

Sglima — Mon, 15 Mar 2010 12:52:36 GMT

Well, this one i simply cannot understand... why anyone would do +0 after and int.parse. Any Ideas?

int myVar = Int32.Parse(ConfigurationManager.AppSettings["mySetting"] + "") + 0;