Hej,

Jag genererar en tabell dynamiskt(tblBox).
I varje tabellcell skapar jag en dynamisk ImageButton.
Sen lägger jag till en Handler som hanterar klick på min ImageButton, "DoViewClick"
Typ så här:

AddHandler lbtnTrans.Command, AddressOf DoViewClick

DoViewClick ser ut så här, den gör inte så mycket än:

Private Sub DoViewClick(ByVal sender As System.Object, ByVal e As System.Web.UI.WebControls.CommandEventArgs)
        Dim item_number As String = e.CommandArgument()
        Dim myArr() As String = Split(item_number, ",")
        txtSampleId.Text = item_number
        txtColumn.Text = myArr(0).ToString()
        txtRow.Text = myArr(1).ToString()
    End Sub

Men när jag klickar på en ImageButton i tabellen, så försvinner tabellen.
Hur kan detta komma sig?`
Jag har satt "tblBox.EnableViewState = True".

Någon som kan hjälpa mig?

Jag vet inte om det spelar någon roll hur jag genererar min tabell, men så här ser den koden ut, om det hjälper.

Private Sub DrawSelectedBox(ByVal rows As Integer, ByVal cols As Integer, ByVal storageUnitObjectId As Integer)

        Dim iTableWidth As Integer
        Dim iCellCounter As Integer
        Dim iRowCounter As Integer
        Dim iCellHeightAndWidth As Integer
        Dim sCellStyle As String
        Dim lbtnTrans As System.Web.UI.WebControls.ImageButton
        Dim isOccupied As Boolean
        Dim sCellClassName As String

        Dim obj As Business_Services.boStorageUnit

        Dim tdsContent As tdsContent
        Dim tdrContent As tdsContent.CONTENTRow
        Dim dvContent As DataView
           
            obj = New Business_Services.boStorageUnit

            'Get number of cols and rows for current storage unit
            tdsContent = obj.getContents(storageUnitObjectId)

            iCellCounter = 1
            iRowCounter = 1

            tblBox.EnableViewState = True

            iTableWidth = 300
            iCellHeightAndWidth = CInt(iTableWidth / cols)
            tblBox.Width = New Unit(iTableWidth)

            Dim newRow As System.Web.UI.WebControls.TableRow
            Dim newColumn As System.Web.UI.WebControls.TableCell

            While iRowCounter <= rows
                newRow = New System.Web.UI.WebControls.TableRow

                While iCellCounter <= cols

                    dvContent = New DataView
                    dvContent = tdsContent.Tables(0).DefaultView
                    dvContent.RowFilter = "RowPos = " & CStr(iRowCounter) & " AND ColPos = " & CStr(iCellCounter)

                    If dvContent(0)("Occupied") Then
                        isOccupied = True
                        sCellClassName = "PlaceSampleCellOccupied"
                    Else
                        isOccupied = False
                        sCellClassName = "PlaceSampleCellFree"
                    End If

                    newColumn = New System.Web.UI.WebControls.TableCell
                    newColumn.Width = New Unit(iCellHeightAndWidth)
                    newColumn.Height = New Unit(iCellHeightAndWidth)
                    newColumn.HorizontalAlign = HorizontalAlign.Center
                    newColumn.VerticalAlign = VerticalAlign.Middle
                    newColumn.CssClass = sCellClassName
                    newColumn.Attributes.Add("style", GetCellBorders(iCellCounter, iRowCounter))

                    If Not isOccupied Then
                        newColumn.Attributes.Add("onmouseover", "this.className='PlaceSampleCellHover';")
                        newColumn.Attributes.Add("onmouseout", "this.className='';")

                        lbtnTrans = New System.Web.UI.WebControls.ImageButton
                        lbtnTrans.ID = iCellCounter & "," & iRowCounter
                        lbtnTrans.ToolTip = "Click to place sample"
                        lbtnTrans.ImageUrl = "Images/trans.gif"
                        lbtnTrans.Width = New Unit(iCellHeightAndWidth)
                        lbtnTrans.Height = New Unit(iCellHeightAndWidth)
                        lbtnTrans.CommandArgument = iCellCounter & "," & iRowCounter

                        AddHandler lbtnTrans.Command, AddressOf DoViewClick

                        newColumn.Controls.Add(lbtnTrans)
                    End If


                    newRow.Cells.Add(newColumn)

                    iCellCounter += 1

                    dvContent.RowFilter = ""
                    dvContent = Nothing

                End While

                'Add row to table
                tblBox.Rows.Add(newRow)

                iCellCounter = 1
                iRowCounter += 1
            End While

    End Sub

Tacksam för hjälp!

/Jocke

Du måste återskapa dynamiskt genererade kontroller vid postback.

Men här är en artikel som kanske kan hjälpa dig lite:
http://www.codeproject.com/aspnet/retainingstate.asp?df=100&forumid=14609&exp=0&select=1316748

Okej, då får jag göra det....

Tack för svaret!

/Jocke