We also need to do this. We cannot cancel the dialog from the ShowDialog event handler because we need the dialog to show after a drag-drop operation.
Is this possible?
answered on 15 Feb 2012, 01:23 PM
In order to achieve this you need to edit the AppointmentItem's ControlTemplates. Using the AppointmentStyleSelector you have to edit the AppointmentItemHorizontalControlTemplate and AppointmentItemVerticalControlTemplate and remove the MouseBinding for the LeftDoubleClick: