Javascript Minify tools, optimization, style checker

Kevin Shyr — Thu, 31 Mar 2011 17:37:54 GMT

Microsoft: http://aspnet.codeplex.com/releases/view/40584

Google: http://code.google.com/p/minify/ ; http://code.google.com/closure/

Some online ones that takes a block of javascript:

http://jscompress.com/

http://www.minifyjavascript.com/

Parallel programming in Visual Studio

Kevin Shyr — Thu, 31 Mar 2011 17:26:03 GMT

Not much experience with these products yet.

Free: http://developer.nvidia.com/object/nsight.html

Not free: http://software.intel.com/en-us/articles/intel-parallel-studio-purchase/

For SSIS, this looks very interesting:

http://extendedssispkgexec.codeplex.com/

JavaScript CheckAll checkbox changes not being picked up by GridView code behind

Kevin Shyr — Wed, 24 Feb 2010 22:03:48 GMT

If you need to use JavaScript to do a Check All on all the checkboxes in the column, be sure to use this guy's code:

http://www.highoncoding.com/Articles/81_Selecting_Checkboxes_inside_GridView_Control.aspx

If your code simply change the state (...checked == true), it does not get registered and does not get passed into the code behind. Instead, follow AzamSharp's article and make sure you initiate a click() event.

Convert GridViewRows into a DataTable to edit data in ASP .NET

Kevin Shyr — Fri, 19 Feb 2010 19:31:55 GMT

I recently ran into a business problem that I can't find any sample code online. I think I worked out a tolerable solution.

The business scenario is this:

All rows retrieve from the database must be in edit mode, but only some fields should be in edit mode, not all. Editing one row at a time is out of the question.
User might make changes and THEN want to sort the grid. Any user input needs to be preserved.
Have to use .NET control that come out of the box with Visual Studio due to maintenance concerns.

The solution i came up with basically get the GridViewRows on postback and put everything into a datatable, then I am free to do whatever I want with it. Also, there is no hard-coded control ID or column name or cell index, which makes it more reuseable.

Solution limitation:

Only 2 type of edit controls are considered: TextBox and DropDownList. Their ID have to be "txt/ddl" + database column name
Any additional field has to come before the first column or after the last column

Code (in VB.NET)

GridView:

<asp:GridView ID="grdClaims" runat="server" style="position: absolute; top: 224px; left:10px;"

AutoGenerateColumns="False" AllowPaging="False" EnableViewState="True"

AllowSorting="True" EmptyDataText="No claims found." EnableTheming="False" >

<asp:TemplateField HeaderText="Select" ItemStyle-CssClass="gridtext">

<asp:CheckBox ID="chkSelectAll" runat="server" onclick="fnSelectAll(this.checked)" />

</HeaderTemplate>

 <asp:CheckBox ID="chkSelect" runat="server" />

</ItemTemplate>

</asp:TemplateField>

<asp:BoundField DataField="CLAIMNR" HeaderText="Claim#" SortExpression="CLAIMNR">

</asp:BoundField>

A Drop Down List in the GridView

<asp:TemplateField HeaderText="Delete" SortExpression="DELETECLMFLAG">

<asp:DropDownList ID="ddlDELETECLMFLAG" runat="server" Text='<%#DataBinder.Eval(Container.DataItem, "DELETECLMFLAG").ToString().Trim()%> '>

<asp:ListItem>Y</asp:ListItem>

<asp:ListItem>N</asp:ListItem>

</asp:DropDownList>

</ItemTemplate>

</asp:TemplateField>

Code behind:

[Updated on 2/22/2010 to fix a bug and for the code to be more efficient]

Dim dtClaims As System.Data.DataTable

Dim iColOffSet As Integer = 2 'This is because the display grid has 2 extra cells at the beginning

dtClaims = dtInsertClaimDetails.Clone() 'dtModifyClaimDetails was cloned the first time the dataset was populated

' Limitation for GridView:

' Data not from the datasource must be at the beginning or the end of the layout, and iColOffSet has to be set

' The code currently assumes that only TextBox or Drop Down List will be used and their ID must be "txt" + ColumnName for

' TextBox or "ddl" + ColumnName for Drop Down List

For Each drGridView As GridViewRow In gvInsertClaimDetails.Rows

Dim dr As System.Data.DataRow = dtClaims.NewRow()

For i As Integer = iColOffSet To dr.ItemArray.Count + iColOffSet - 1

Dim sColumnName As String = dtClaims.Columns(i - iColOffSet).ColumnName.ToString()

Dim sInputOrData As String

If Not drGridView.Cells(iColOffSet).FindControl("txt" + sColumnName) Is Nothing Then

'Found the textbox

sInputOrData = CType(drGridView.Cells(iColOffSet).FindControl("txt" + sColumnName), TextBox).Text

ElseIf Not drGridView.Cells(iColOffSet).FindControl("ddl" + sColumnName) Is Nothing Then

'Found the drop down list

sInputOrData = CType(drGridView.Cells(iColOffSet).FindControl("ddl" + sColumnName), DropDownList).SelectedValue

Else

sInputOrData = drGridView.Cells(i).Text

End If

' If the data is empty, do not insert back into datatable if the type is numbers, leave them NULL

If (dtClaims.Columns(i - iColOffSet).DataType.ToString() = "System.Int32" _

Or dtClaims.Columns(i - iColOffSet).DataType.ToString() = "System.Double") _

And (String.IsNullOrEmpty(sInputOrData) Or sInputOrData = " ") Then

' Do nothing

Else

' Set the column

dr.Item(i - iColOffSet) = System.Convert.ChangeType(sInputOrData, dtClaims.Columns(i - iColOffSet).DataType)

End If

dtClaims.Rows.Add(dr)

Return dtClaims

[2010-04-16] Update:

The performance of this is good for a form with 30 columns (20 editable fields) for about 20 rows (a couple of seconds), but pretty bad for the same form with about 300 rows (1 minute). This form was built with a couple of drop down list filters at the top of the page to filter result, so the general purpose is served. This benchmark was done on P4 single core server with 3 GB RAM with default performance setting for the web server (and SQL on the same server).

Getting a little annoyed at a website

LifeLongTechie — Tue, 05 Jan 2010 19:06:39 GMT

I may not be a lawyer, but definition and how to properly excute a plan are very important to me.

When you create a website and want to store something in a Config file, simply calling your class "ConfigFile" is NOT the way to do it. This web projectI am looking at is so far down the wrong path that it needs a rebuild.

ASP .NET control library

LifeLongTechie — Tue, 15 Dec 2009 20:15:33 GMT

Man, I feel angry that this is the first time I heard of this site:

http://www.asp.net/community/control-gallery/

conditional page break inside the repeater on a dynamically created web user control

LifeLongTechie — Fri, 25 Sep 2009 17:27:48 GMT

Business Scenario:

The client wants to build a few reports (only in HTML format) that basically have the same format, but needs paging when the report is sent to the printer.

Solution:

I built the report inside a user control to reuse the formatting, but had to solve the problem where hard-coding the page break at the UI side will give me an extra page in printing. Code:

Inside ASCX:

<%# InsertPageBreakIfNotLastPage(DataBinder.Eval(Container, "ItemIndex")) %>

Code behind (C #):

public string InsertPageBreakIfNotLastPage(object o)
  {
   try
   {
    if(System.Convert.ToInt32(o) != (dsInd.Tables[0].Rows.Count - 1))
    {
     return "<p style='page-break-after: always'> </p>";
    }
    else
    {
     return "";
    }
   }
   catch(Exception)
   {
    return "";
   }
  }