Cannot change/set Headertext

[Stuart Hemming]

OK. Here's the deal.

I have a Grid that is defined with columns like this ...

1.<telerik:GridTemplateColumn UniqueName="DateTimeAdded" SortExpression="DateTimeAdded">
2.    <ItemTemplate>
3.        <div id="lblDateTime2"/>
4.    </ItemTemplate>
 5..
</telerik:GridTemplateColumn>

And I have some code behind that looks like this ...

1.switch (item.UniqueName)
2.                {
3.                    case "DateTimeAdded":
4.                        item.HeaderText = GetGlobalStringResource(GTypes.Task.TASK_LIST, GKeys.Task.TaskList.GRID_COLUMN_HEADER_TEXT_DATE_TIME);

Now, I've tried invoking this code in the OnLoad event and in both the Page and the Grid's OnPreRender event. In each case I can see the value of item.headerText being correctly set. However, it is NEVER rendered.

I can't call this during the ItemDataBound event as the grid is bound on the client.

I can't call this during the OnColumnCreated/OnConlumnCreating events as they aren't invoked.

I'd welcome any suggestions.

[Princy]

Hi Stuart Hemming,

Please try the following code snippet to set HeaderText property of the Grid Columns:

C#:

protected void RadGrid1_PreRender(object sender, EventArgs e)
{
 foreach (GridColumn col in RadGrid1.MasterTableView.Columns)
 {
  switch (col.UniqueName)
  {
   case "DateTimeAdded": col.HeaderText = "Header Text";
                   break;
  }
 }
 RadGrid1.Rebind();
}

Thanks,
Princy

[Stuart Hemming]

Whilst that does update the headers, it's of no use. As I said in my original message, the grid is bound on the client. Consequently, I end up with a grid that has the right headers but nothing else! :-)

[Konstantin Dikov]

Hi Stuart,

If I understand correctly, the remaining issue is that there is no data within your columns, which from the provided code snippet is rather expected, since there is no DataField property set in your column, neither any binding expression are present.

Please have a look at the following online demos and help articles that could prove helpful for your requirements:

• Grid - ClientItemTemplate
• Grid - Programmatic Binding
• GridTemplateColumn

Hope that helps.

Regards,
Konstantin Dikov
Telerik