Dynamic controls and ajax

[tkoc]

Hi
i have a script there then you select 2 days in 2 RadDatePicker
updates a table with timepickers

    Protected Sub RadDatePicker2_SelectedDateChanged(ByVal sender As Object, ByVal e As Telerik.Web.UI.Calendar.SelectedDateChangedEventArgs) Handles RadDatePicker2.SelectedDateChanged
        Dim Days As Integer
        If RadDatePicker2.SelectedDate.Value.Subtract(RadDatePicker1.SelectedDate.Value).Days >= 0 Then
            Days = RadDatePicker2.SelectedDate.Value.Subtract(RadDatePicker1.SelectedDate.Value).Days
            For i = 0 To Days Step 1
                Dim row As New TableRow
                Dim cell As New TableCell
                cell.Text = RadDatePicker1.SelectedDate.Value.AddDays(i)
                row.Cells.Add(cell)
                cell = New TableCell
                Dim timePicker As New Telerik.Web.UI.RadTimePicker
                timePicker.ID = "TimePickerA" & i
                timePicker.Skin = "Black"
                cell.Controls.Add(timePicker)
                row.Cells.Add(cell)
                timePicker = New Telerik.Web.UI.RadTimePicker
                timePicker.ID = "TimePickerB" & i
                timePicker.Skin = "Black"
                cell.Controls.Add(timePicker)
                row.Cells.Add(cell)
                EventDates.Rows.Add(row)
            Next
        End If
    End Sub

the problem is then i use a button to submit the form how do i get access to my RadTimePicker  controls
then i look in the table it is emtry the dynamic create rows disapers

[Sebastian]

Hi tkoc,

Creating server controls inside postback event handler is not proper approach since this is a late stage in the page lifecycle to create controls (their viewstate/lifecycle will be corrupted and they will disappear on subsequent postbacks). You will experience the same behavior with regular MS Button or Calendar for example if you create them in the same way.

Please revise your logic to address the issue. After that, to locate the controls after postback, use the FindControl(id) method of the framework by passing their ids as argument.

Best regards,
Sebastian
the Telerik team

Instantly find answers to your questions on the new Telerik Support Portal.
Watch a video on how to optimize your support resource searches and check out more tips on the blogs.