Insert Row into Gridview without modifiying datasource

[CassidyHunt]

Does anyone have a method of inserting a row into a gridview perhaps on the prerender or render events of the gridview control?

Thanks

Cassidy

 

[ca8msm]

How about just adding the row to the DataTable (or whatever you are using as the source) before binding?


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[ca8msm]

Sorry, just noticed the thread title! Any particular reason you don't want to use this method?


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[CassidyHunt]

I actually just found the answer to this. The reason I do not want add the row to the datasource is because I need to build a server control that will handle group by and summary methods.

The solution that I found is this:

Protected Overrides Sub Render(ByVal writer As System.Web.UI.HtmlTextWriter)
        If _SortedFlag Then

            Dim table As Table = DirectCast(grid1.Controls(0), Table)

            Dim htLookUp As New Hashtable

            For Each row As GridViewRow In grid1.Rows

                Dim realIndex As Integer = table.Rows.GetRowIndex(row)

                Dim text As String = row.Cells(_SortColumnIndex).Text

                If Not htLookUp.ContainsKey(text) Then
                    htLookUp.Add(text, Nothing)

                    Dim newHeaderRow As New GridViewRow(realIndex, realIndex, DataControlRowType.DataRow, DataControlRowState.Normal)
                    Dim newCell As New TableCell()
                    newHeaderRow.Cells.Add(newCell)
                    newCell.ColumnSpan = grid1.Columns.Count
                    newCell.BackColor = Drawing.Color.Gray
                    newCell.ForeColor = Drawing.Color.White
                    newCell.Font.Bold = True
                    newCell.Text = _SortColumnHeader & " : " & text

                    table.Controls.AddAt(realIndex, newHeaderRow)

                End If
            Next

        End If
        MyBase.Render(writer)
    End Sub

Actually I producing my index's differently since I need to place multiple sort columns.

I don't know if anyone would be interested by I will post my complete extended gridview class here.

Thanks

Cassidy

 

[ca8msm]

I don't know if anyone would be interested by I will post my complete extended gridview class here.

Go for it...I'm sure it will help someone.


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