OnRowDataBound event of Grid VIew

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Hello Sir,

I have a database with a table it has two columns (Name,Id). I wrote a code to customize the sorting for a grid view. Please see the below code :

C#

<asp:GridView ID="gv1" DataSourceID="sql1" AutoGenerateSelectButton="true" DataKeyNames="Name,Id" AllowSorting="true" CssClass="gridview" SelectedRowStyle-CssClass="selectedRow" OnRowDataBound="rowdatabound" runat="server" />
  <asp:SqlDataSource id="sql1" runat="server"  SelectCommand="select * from contact" ConnectionString="Data Source=.\SQLEXPRESS;AttachDBFileName=|DataDirectory|Database1.mdf; User Instance=True; Integrated Security=True"/>

The Code Behind is :

C#

public void rowdatabound(object sender, GridViewRowEventArgs e)
      {
          if (e.Row.RowType == DataControlRowType.Header)
          {
              foreach (TableCell cell in e.Row.Cells)
              {
                  LinkButton sortlink = (LinkButton)cell.Controls[0]; -------1
                  if (sortlink.Text == gv1.SortExpression)
                  {
                      if (gv1.SortDirection == SortDirection.Ascending)
                      {
                          sortlink.Text = "Ascending";
                      }
                      else
                      {
                          sortlink.Text = "Descending";
                      }

                  }

              }

          }

      }

But the error i got was index out of bounds at line number 1.

Please help,
Thanks

Posted 8-Sep-13 18:21pm

Rahul VB

Updated 8-Sep-13 18:23pm

Thanks7872

v2

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bitofweb · Accepted Answer · 2013-09-08T19:57:00

Solution 2

Hi Rahul,

Try this code.

C#

DataControlFieldHeaderCell sortlink = (DataControlFieldHeaderCell)cell;

The reason your code in not working properly b'coz you have turned on

C#

AutoGenerateSelectButton="true"

.

If you remove

C#

AutoGenerateSelectButton="true"

your existing code will work perfectly, I mean without any errors or exceptions.

Hope this helps!

Posted 8-Sep-13 19:57pm

bitofweb

Comments

Rahul VB 9-Sep-13 6:19am

Hello Sir,
Thanks a lot for your solution it worked. Can you please tell me why removing:
AutoGenerateSelectButton="true" option makes the code work?

Thanks a lot

bitofweb 9-Sep-13 9:21am

Hi Rahul,
I think this is because,when you set the AutoGenerateSelectButton = true then one extra column is added dynamically (as you already know) and the value of that column is __doPostBack(eventTarget, eventArgument), so user should not be able to modify the column cell 's values.

Sample of generated code
<td>Select</td><td>Suits</td><td>0</td>

Rahul VB 9-Sep-13 23:57pm

thanks sir,
very nice
5

jaideepsinh · Accepted Answer · 2013-09-08T19:55:00

Solution 1

Refer this link hope that one solve your problem :

http://www.c-sharpcorner.com/UploadFile/deepak.sharma00/gridview-paging-and-sorting-in-Asp-Net-using-sqldatasource/[^]

Optimized Paging and Sorting using Object Data Source[^]

Gridview Sorting with Up and Down Icons, Paging[^]

Posted 8-Sep-13 19:55pm

jaideepsinh

Comments

Rahul VB 9-Sep-13 6:30am

Thanks sir,

very helpful

jaideepsinh 9-Sep-13 6:53am

Thank's,
Please accept as answer.

Rahul VB 9-Sep-13 23:56pm

done