Overwritting the DragAndDropBehavior Resize method

[Rebecca]

I am implementing a DragAndDropBehavior class and have overwritten the Resize function; however I cannot figure out how to Resize the appointment without passing the state to the MyBase.Resize() method.

I have tried the following to resize the appointment, and the start&end properties of the underlying objects (the appointment) change but visual GUI representation for the appointment does not.

How do I resize the appointment's GUI representation?

Public Overrides Sub Resize(ByVal state As Telerik.Windows.Controls.DragDropState)

        Dim draggedAppointment As myCustomAppointment = Nothing
        If state.Appointment.GetType Is GetType(Occurrence) Then
            draggedAppointment = DirectCast(state.Appointment, Occurrence).Appointment
        ElseIf state.Appointment.GetType Is GetType(Appointment) Then
            draggedAppointment = DirectCast(state.Appointment, myCustomAppointment)
        End If

        If draggedAppointment IsNot Nothing Then
            Dim startTS As New TimeSpan(state.DestinationSlots(0).Start.DayOfWeek, state.DestinationSlots(0).Start.Hour, state.DestinationSlots(0).Start.Minute, state.DestinationSlots(0).Start.Second)
            Dim endTS As New TimeSpan(state.DestinationSlots(0).[End].DayOfWeek, state.DestinationSlots(0).[End].Hour, state.DestinationSlots(0).[End].Minute, state.DestinationSlots(0).[End].Second)

            If startTS <> draggedAppointment.TimePeriod.StartTime Then
                draggedAppointment.Start = state.DestinationSlots(0).Start
                state.DestinationSlots(0).Start = draggedAppointment.Start
            End If

            If endTS <> draggedAppointment.TimePeriod.EndTime Then
                draggedAppointment.End = state.DestinationSlots(0).End
                state.DestinationSlots(0).End = draggedAppointment.End
            End If
        End If

       'MyBase.Resize(state)
End Sub


Thank you for your time.

[Yana]

Hello Rebecca,

I suggest you use BeginEdit() and Commit() methods in order to resize the appointment like this:

state.ServiceProvider.GetService(Of IObjectEditor(Of IAppointment)).BeginEdit(draggedAppointment)

'update the properties of the appointment here
draggedAppointment.Start = state.DestinationSlots(0).Start
draggedAppointment.End = state.DestinationSlots(0).End

state.ServiceProvider.GetService(Of IObjectEditor(Of IAppointment)).Commit()

Hope this helps.

All the best,
Yana
the Telerik team

[Rebecca]

Thank you for your help.
It works well now!