Question

After posting this: Custom Header in GridView

…I have a related problem. I have added the table row during OnDataBound, and it shows up, the links are clickable. There are two problems with adding it here: first, if a postback occurs that doesn’t DataBind, the row disappears; second, no events are happening when the LinkButtons are clicked. Here is the OnDataBound code:

 protected override void OnDataBound(EventArgs e) {     base.OnDataBound(e);      // Hook up the handler to create the Selection header/footer      // TODO: Wrap this in a function sometime     Table table = (Table)Controls[0];     GridViewRow row = new GridViewRow(-1, -1, DataControlRowType.EmptyDataRow, DataControlRowState.Normal);      // TODO: should add css classes     TableHeaderCell cell = new TableHeaderCell();     cell.ColumnSpan = Columns.Count + 1; // plus 1 for the checkbox column     cell.HorizontalAlign = HorizontalAlign.Left; // do this or css?      HtmlGenericControl label = new HtmlGenericControl('label');     label.InnerText = 'Select:';      selectNoneLK = new LinkButton();     selectNoneLK.ID = 'SelectNoneLK';     selectNoneLK.Text = 'None';     selectNoneLK.Click += SelectNoneLK_Click;     //selectNoneLK.CommandName = 'SelectNone';     //selectNoneLK.Command += SelectNoneLK_Click;      selectAllLK = new LinkButton();     selectAllLK.ID = 'SelectAllLK';     selectAllLK.Text = 'All on this page';     //selectAllLK.CommandName = 'SelectAll';     //selectAllLK.Command += SelectAllLK_Click;     selectAllLK.Click += SelectAllLK_Click;      cell.Controls.Add(label);     cell.Controls.Add(selectNoneLK);     cell.Controls.Add(selectAllLK);      row.Controls.Add(cell);      // Find out where to put this row      int rowIndex = 0;     if(SelectionMode == SelectionMode.AboveHeader)     {         rowIndex = 0;     }     else if(SelectionMode == SelectionMode.BelowHeader)     {         rowIndex = 1;     }     else if(SelectionMode == SelectionMode.AboveFooter)     {         rowIndex = table.Rows.Count;     }     else if(SelectionMode == SelectionMode.BelowFooter)     {         rowIndex = table.Rows.Count + 1;     }      table.Rows.AddAt(rowIndex, row); } 

Answer 1

You can try putting it in the RowCreated Event, while the header is being created. This might also fix your problem with the LinkButtons not working.

void GridView1_RowCreated(Object sender, GridViewRowEventArgs e)   {      if(e.Row.RowType == DataControlRowType.Header)       {          ...your code here        }