Persisting RunTime created controls

[Lord_Rat]

I am using a DataGrid. In it, I add a cell and then attempt to add an evenhandler.

In any case, whenever anything is clicked on the page, the added cells drop from the datagrid -- EVEN IF I do not do anything with the datagrid.

In the past, usually datagrids don't change unless you change them.

Anyone run in to this? How can I make the DataGrid persist the added cells?

My Code:

    Public Sub QueueDataGrid_Bound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.DataGridItemEventArgs) Handles QueueDataGrid.ItemDataBound
        Dim tempVal As String
        Dim DItem As Object 'System.Web.UI.WebControls.DataGridItem
        Dim intI As Integer
        Dim TTCell As New System.Web.UI.WebControls.TableCell()
        Static CellsList() As Boolean
        If e.Item.ItemType = System.Web.UI.WebControls.ListItemType.Header Then
            ReDim CellsList(e.Item.Cells.Count)
            For intI = 0 To e.Item.Cells.Count - 1
                If Not IsDBNull(e.Item.Cells(0).ToString) Then
                    If UCase(Left((e.Item.Cells(intI).Text.ToString()), 3)) = "HDN" Then
                        CellsList(intI) = False
                        e.Item.Cells(intI).Visible = False
                    Else
                        CellsList(intI) = True
                        e.Item.Cells(intI).Visible = True
                    End If
                End If
                '   Response.Write(e.Item.DataItem.item(0).ToString())
            Next
            TTCell.Text = ""
            e.Item.Cells.AddAt(e.Item.Cells.Count, TTCell)
        End If

        If e.Item.ItemType = System.Web.UI.WebControls.ListItemType.Item Or e.Item.ItemType = System.Web.UI.WebControls.ListItemType.AlternatingItem Or e.Item.ItemType = System.Web.UI.WebControls.ListItemType.Footer Then
            For intI = 0 To e.Item.Cells.Count - 1
                e.Item.Cells(intI).Visible = CellsList(intI)
            Next

            Dim ViewCell As New System.Web.UI.HtmlControls.HtmlButton()
            If Not IsDBNull(e.Item.Cells(0).ToString()) Then
                ViewCell.InnerText = "View"
                ViewCell.Attributes.Add("onClick", "javascript:window.open('default.aspx?vwRec=" & e.Item.Cells(0).Text.ToString() & "');void[];")
                ViewCell.Attributes.Add("Class", "QueueButton")
                TTCell.Controls.Add(ViewCell)

                TTCell.Controls.Add(New LiteralControl("|"))

                Dim TakeCell As New System.Web.UI.WebControls.Button()
                TakeCell.Text = "Take"
                'TakeCell.Attributes.Add("Class", "QueueButton")
                TakeCell.ID = e.Item.Cells(0).Text.ToString()
                AddHandler TakeCell.Click, AddressOf TakeCellClick

                e.Item.Cells.AddAt(e.Item.Cells.Count, TTCell)
                e.Item.Cells(e.Item.Cells.Count - 1).Controls.Add(TakeCell)

            End If
        End If
    End Sub

    Public Sub TakeCellClick(ByVal sender As Object, ByVal e As System.EventArgs) 'ByVal e As ImageClickEventArgs)  Handles bn.Click
        LoginApp.Visible = True
        Response.Write("I was clicked")
    End Sub

I never get "I was clicked" outputted to the page and the extra table cell column drops from the table

[jpfolin]

you need to check for postback in page_load function

[Edneeis]

You can also try declaring the runtime variables in a module instead of the page. I don't know for sure about eventhandlers but with delegates you have to reset them at every postback.