This example shows how the calendar supports client Java Script for reading an information about last clicked appointment, resource or date-time. Click somewhere on the calendar. Show two days Selected appointment get_SelectedAppointment(): Text get_Text(): Start Date get_Start(): End Date get_End(): All day get_AllDayEvent(): ID get_AppointmentId(): Busy color get_BusyColor(): Selected resource get_SelectedResourceIndex(): Text get_Text(): Selected date-time get_SelectedDateTime(): Date & time:

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If you would look into a source code for this demo, click on the link.
For demonstration purposes all appointments displayed on a calendar are stored in ASP.NET session objects, so original values are restored immediately after a new session object is created.
A list of appointments and resources is intialized every time a new session is started.