Add Gridview Row AFTER Header

Question

i\'m trying to add a new headerrow to a Gridview. This row should appear below the original headerrow.

As far as I know I have two events to choose from:

1.)

Answer 1

Nice work guys, I used your technique for grouping my AJAX enabled gridview, and I searched for a long, long time. Cheers.

protected override void PrepareControlHierarchy()
{
    if (GroupColumns)
    {
        #region Group Column

        Table table = (Table)Controls[0];

        string lastValue = string.Empty;
        foreach (GridViewRow gvr in this.Rows)
        {
            string currentValue = gvr.Cells[GroupColumnIndex].Text;

            if (lastValue.CompareTo(currentValue) != 0)
            {
                // there's been a change in value in the sorted column
                int rowIndex = table.Rows.GetRowIndex(gvr);

                // Add a new sort header row
                GridViewRow sortRow = new GridViewRow(rowIndex, rowIndex, DataControlRowType.DataRow, DataControlRowState.Normal);

                TableCell sortCell = new TableCell();
                TableCell blankCell = new TableCell();

                sortCell.ColumnSpan = this.Columns.Count - 1;
                sortCell.Text = string.Format("{0}", currentValue);

                blankCell.CssClass = "group_header_row";
                sortCell.CssClass = "group_header_row";

                // Add sortCell to sortRow, and sortRow to gridTable
                sortRow.Cells.Add(blankCell);
                sortRow.Cells.Add(sortCell);
                table.Controls.AddAt(rowIndex, sortRow);

                // Update lastValue
                lastValue = currentValue;
            }
        }

        #endregion
    }

    HideColumns();

    base.PrepareControlHierarchy();
}