Old DragDrop Behavior

[Vic]

Hello,

We are in the process of upgrading from the old Schedule control and would like to implement the same old drag/drop behavior.

Basically I am trying to achieve is when resizing/dragging or dragging/dropping update the time of the appointment w/o displaying the appointment form.

I have a custom behavior in place and can suppress the dialog by not calling the base (base.Resize, etc) methods but the appointment items in the UI are not updating.

Updating the appointment in state.SourceAppointmentsSource collection doesn't seem to work.

I am thinking at this point I need to send a message to my ViewModel to update the main AppointmentSource but wanted to know if there was a cleaner way to achieve this.

Thanks,
Vic

[Yana]

Hi Vic,

We're not sure what exactly is your setup. Could you please send us a sample code/project with the used custom DragDropBehavior,  so we to be able to test the scenario and assist you to achieve the needed approach? Thanks

Regards,
Yana
the Telerik team

[Vic]

Hi Yana,

Here is the Resize override, I have reorganized the code and the SourceAppointmentsSource is correct, though updating the source appointment doesn't cause the binding to update the UI.

What am I missing?

Thanks,
Vic

public override void Resize(DragDropState state)
        {
            // update the dates if changed (this is not recurrence aware)
            var appt = state.Appointment as Telerik.Windows.Controls.ScheduleView.Appointment;
            var targetSlot = state.DestinationSlots.FirstOrDefault();
 
            if (appt == null || (targetSlot == null || (appt.Start == targetSlot.Start && appt.End == targetSlot.End))) return;
 
                  
            var thisAppointment = state.SourceAppointmentsSource.OfType<Telerik.Windows.Controls.ScheduleView.Appointment>().FirstOrDefault(a => a.UniqueId == appt.UniqueId);
 
            if (thisAppointment != null)
            {
                thisAppointment.Start = targetSlot.Start;
                thisAppointment.End = targetSlot.End;
            }
 
            //base.Resize(state);
        }

[Vic]

I was able to get this to work by sending a message from the custom Drag/Drop behavior to my ViewModel to perform the appropriate update.

Thanks for following up

-Vic