''' <summary>
    ''' Insert a sub header in a grid view.
    ''' </summary>
    ''' <param name="gv">The GridView to insert the sub header row into.</param>
    ''' <param name="gvrBeforeRow">The GridViewRow to insert the sub header before.</param>
    ''' <param name="sSubHeaderText">The text to render in the sub header.</param>
    ''' <remarks></remarks>
    Protected Sub insertGroupHeaderToGridView(ByRef gv As GridView, ByVal gvrBeforeRow As GridViewRow, ByVal sSubHeaderText As String)
 
        Dim visibleColumns As Integer = gv.Columns.Count
 
        Dim tbl As Table = gv.Controls(0)
        Dim newRowIndex As Integer = tbl.Rows.GetRowIndex(gvrBeforeRow)
        Dim newRow As GridViewRow = New GridViewRow(newRowIndex, newRowIndex, DataControlRowType.DataRow, DataControlRowState.Normal)
 
        newRow.Cells.Add(New TableCell())
 
        If (visibleColumns > 1) Then
            newRow.Cells(0).ColumnSpan = visibleColumns
            newRow.Cells(0).Text = sSubHeaderText
        End If
 
        tbl.Controls.AddAt(newRowIndex, newRow)
 
    End Sub