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Show AppointmentDialogWindow when an appointment is created (via drag and drop)
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Pete
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Pete asked on 13 Jan 2012, 12:53 PM
I am trying to show the AppointmentDialogWindow after a drag-and-drop operation creates an appointment.

I have added an event handler for ScheduleView.AppointmentCreated.

If I call :
RadScheduleViewCommands.EditAppointment.Execute((Appointment)e.CreatedAppointment, ScheduleViewer);

I get an infinite loop and a StackOverFlowException.
I tried calling EditAppointment when the AppointmentsSource collection is added to, but at this stage of execute the appointment is still blank.

(I have read this thread: http://www.telerik.com/community/forums/silverlight/scheduleview/show-appointmentdialogwindow-manually.aspx  but this did not have the answer) 

Thanks

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Konstantina
Telerik team
answered on 17 Jan 2012, 02:32 PM
Hello,

In order to show the EditAppointmentDialog when dragging and dropping an appointment, you need to execute the command on DragDropCompleted event. You can find more information about the drag-drop behaviour of the RadScheduleView in this help article.

Hope this helps.

All the best,
Konstantina
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Pete
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answered on 20 Jan 2012, 11:10 AM
I have a DragDropBehavior for my GridView (drag source), which executes DragDropCompleted after I drag and drop onto the ScheduleView. In the override for DragDropCompleted I only have access to the appointment and not the ScheduleView.

I have a ScheduleViewDragDropBehavior, and the override for Drop(DragDropState) is called, but I cannot get a reference to the ScheduleView on which this behavior is applied. I cannot add a dependency property because the base class DragDropBehavior is not a dependency object.

There is no DragDropCompleted event on the ScheduleView itself - only a Drop event (which doesn't fire after the item is dropped onto the ScheduleView).

I cannot see a way to achieve this.

Thanks


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Konstantina
Telerik team
answered on 23 Jan 2012, 10:38 AM
Hello,

Yes, you are correct, this is a limitation of the DragDropBehaviour. I can suggest you to do the following, but please keep in mind that this is a hack and is better to avoid it if it is not completely necessary:

var scheduleView = state.ServiceProvider.GetService<IObjectEditor<IAppointment>>() as ScheduleView();

All the best,
Konstantina
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Pete
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answered on 23 Jan 2012, 11:20 AM
Thanks - that's what I needed.

Unfortunately, the appointment in the DragDropState is not the correct appointment that I need to edit so I have to employ another hack to get it (this is due to the ScheduleView creating several copies of the appointment when using the dialog, which can be seen if a breakpoint is added to the CopyFrom method of the Appointment).

I've included the code below in case anyone else has the same issue:

public override void Drop(Telerik.Windows.Controls.DragDropState state)
{
    base.Drop(state);
    var scheduleView = state.ServiceProvider.GetService<IObjectEditor<IAppointment>>() as RadScheduleView;
    var appointments = scheduleView.AppointmentsSource as ObservableCollection<Appointment>;
    // assume that we are dealing with the last added appointment
    var lastAppointment = appointments.Last();
    RadScheduleViewCommands.EditAppointment.Execute((Appointment)lastAppointment, scheduleView);
}

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Konstantina
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