Show the datetimepicker in dropped down mode when a gridview cell is selected

[Terry]

I have a RadGridView in Winforms and a date time cell which when clicked will show the text edit mode and a drop down arrow to the right. On clicking the drop down arrow the nice calendar date picker shows.

I'm trying to get the calendar to show straight away but can't find a method on the calendar object. My current code is as follows;

Private Sub OrderGridView_CellEditorInitialized(sender As Object, e As Telerik.WinControls.UI.GridViewCellEventArgs) Handles OrderGridView.CellEditorInitialized
    Console.WriteLine("Editor init: {0}", e.ToString())

    Dim editor = TryCast(OrderGridView.ActiveEditor, RadDateTimeEditor)
    If (editor IsNot Nothing) Then
        Dim calendar = DirectCast(editor.EditorElement, RadDateTimeEditorElement)
        calendar.GetCurrentBehavior().DateTimePickerElement.Visibility = Telerik.WinControls.ElementVisibility.Visible
        calendar.PerformClick()
        calendar.Select()
    End If

End Sub

Is there a way to do this? Perhaps if not possible, I'll fake a click to the drop down button.

Thanks in advance

[Peter]

Hello Terry,

Thank you for contacting Telerik support.

You should call ShowPopup method in order to show the calendar portion of the DateTimePicker Editor.
Please refer to code below and to the sample project.

Private Sub OrderGridView_CellEditorInitialized(sender As Object, e As Telerik.WinControls.UI.GridViewCellEventArgs) Handles OrderGridView.CellEditorInitialized

    Console.WriteLine("Editor init: {0}", e.ToString())

    Dim editor = TryCast(OrderGridView.ActiveEditor, RadDateTimeEditor)

    If (editor IsNot Nothing) Then

        Dim calendar = DirectCast(editor.EditorElement, RadDateTimeEditorElement)

        TryCast(calendar.GetCurrentBehavior(), RadDateTimePickerCalendar).Calendar.LoadElementTree()

        AddHandler TryCast(calendar.GetCurrentBehavior(), RadDateTimePickerCalendar).PopupControl.PopupClosing, AddressOf canClose

        TryCast(calendar.GetCurrentBehavior(), RadDateTimePickerCalendar).ShowDropDown()

    End If
End Sub

Private Sub canClose(sender As Object, args As RadPopupClosingEventArgs)
    args.Cancel = args.CloseReason = RadPopupCloseReason.AppFocusChange
End Sub

I hope this helps.

All the best,
Peter
the Telerik team