Disable Multiple Appointments Selection in RadScheduleView

Environment

Product Version	2019.3.917
Product	RadScheduleView for WPF

Description

Disable multiple appointments selection in RadScheduleView using a custom AppointmentSelectionBehavior.

Solution

To allow only a single appointment to be selected you can create a custom AppointmentSelectionBehavior and override its GetSelectedAppointments method.

public class CustomAppointmentSelectionBehavior : AppointmentSelectionBehavior 
{ 
    protected override IEnumerable<IOccurrence> GetSelectedAppointments(AppointmentSelectionState state, IOccurrence target) 
    { 
        var originalSelection = base.GetSelectedAppointments(state, target); 
        if (originalSelection.Count() > 1) 
        { 
            var lastSelected = originalSelection.Last(); 
            return new List<IOccurrence>() { lastSelected }; 
        } 
        return originalSelection; 
    } 
}