Occurs before the save calendar action. Return false or call event.preventDefault() in order to cancel event and prevent the save action. args.data - the new calendar data that should be saved to a data source. args.prevData - previous calendar data, this argument is empty for a new calendar.

'Declaration
 
Public Property OnClientBeforeSaveCalendar As System.String

public System.string OnClientBeforeSaveCalendar {get; set;}