VB.NET: sorting a gridview

I created a gridview function that has as inputs: a data table and a meta data table. I would like to add functionality to this function so the user can sort the gridview by clicking on the header column. I am open to other enhancements like a filter option or paging. Please specify the costs of these extra's. ## Deliverables **Current function:** Public Function MyGrid(ByVal dt As [login to view URL], ByVal dtFieldMetaData As [login to view URL]) As GridView Dim grd As New GridView Dim i As Integer Dim the_val As String [login to view URL] = [login to view URL] [login to view URL] = dt [login to view URL] = 9 [login to view URL] = [login to view URL](89, 161, 62) [login to view URL] = [login to view URL] [login to view URL] = [login to view URL](62,184, 69) [login to view URL] = [login to view URL] [login to view URL] = [login to view URL](153, 59, 2)[login to view URL] = [login to view URL] [login to view URL]() i = 0 For Each row In [login to view URL] the_val = [login to view URL]("alignment") If IsDBNull([login to view URL]("rpt_det_field_description")) = False Then [login to view URL](0).Cells(i).ToolTip = [login to view URL]("rpt_det_field_description") End If For j = 0 To [login to view URL] - 1 Select Case the_val Case "L" [login to view URL](j).Cells(i).HorizontalAlign = [login to view URL] Case "R" [login to view URL](j).Cells(i).HorizontalAlign = [login to view URL] Case "M" [login to view URL](j).Cells(i).HorizontalAlign = [login to view URL] Case Else [login to view URL](j).Cells(i).HorizontalAlign = [login to view URL] End Select Next j i = i + 1 Next row Return grd End Function **SAMPLE INPUT DATA:** **1) The input table** | Parameter | Waarde | | --------------- | -------------------------------- | | Run ID | 2 | | Datum run | 20 Jan 2012 | | Object | Verhuureenheid | | Meester relatie | VERHUUREENHEID hoort bij COMPLEX | **2) the meta data table** <colgroup> <col /> <col /> <col /> <col /> <col /> <col /></colgroup> | **form_id** | **rpt_det_fld_name** | **function_field_col_order** | **basic_type** | **alignment** | **rpt_det_field_descripion** | | 196 | Parameter | 1 | CHAR | L | Bla bla | | 196 | Waarde | 2 | CHAR | L | Bla bla |