How to cancel drop in handler specified by AddDropInfoHandler method

[Rod Yager]

When DragComplete status is hit in my DropInfo handler, I want to update something in the DB. If that fails, I would like the appointment drop to be canceled. How can I achieve this?

Thanks,
Rod

[George]

Hello Rod,

I would suggest you to refer to our online documentation - http://www.telerik.com/help/wpf/raddraganddrop-howto-delayed-dragdrop.html

I hope this suits your needs.

Kind regards,
George
the Telerik team

[Rod Yager]

I tried this example and it is not working for me. My scheduleview has an AppointmentSource set to an ObservableAppointmentCollection. The Appointment gets added to the scheduleview even when it doesn't get added via the delayedDragDrop.DropAction
 

delayedDragDrop.DropAction = () =>

                {

                    taskAppointments.Add(mta);

                };

  

                IList selectedItems = delayedDragDrop.DragDropState.Data as IList;

                foreach (DataRowView drv in selectedItems)

                {

                    ObservableCollection<object> resources = delayedDragDrop.DragDropState.DestinationSlots.First().Resources;

                    if (resources.Count == 1)

                    {

                        mta = delayedDragDrop.Appointment as MetrixTaskAppointment;

                        PersonResource resource = resources[0] as PersonResource;

                        string personId = resource.PersonId;

                        DateTime slotStart = delayedDragDrop.DragDropState.DestinationSlots.First().Start;

  

                        if (personId.Length > 0 && mta != null)

                        {

                            if (UpdateTaskAndUnit(personId, mta, slotStart))

                            {

                                removeObjects.Add(drv);

                                delayedDragDrop.DropAction();

                            }
                                       else
                                       {
                                           The Appointment is still being rendered on the ScheduleView
                                           even though I have not added it to the AppointmentSource 
                                           collection.
                                       }     

                        }

                    }

                }

[George]

Hello Rod,

Could you please give us more detailed information about your scenario? Do you drag and drop appointments only inside the RadScheduleView or you drag them from an external source? If you send us a sample application that reproduces the problem it would be very helpful. 

 

Regards,
George
the Telerik team