We have extended the functionality of DHTMLX Scheduler .NET and now you can get an online room booking calendar for ASP.NET. This booking application can be used by hotels for booking rooms, hospitals to schedule patients or anyone else for online reservations. This extension has the following features: All users should be authorized to add events to the calendar; Every user has access only to his events, which he can modify or delete; Expired calendar events can't be deleted or edited; Only one room for one event can be selected from a drop-down list; Different event colors are set for different users; Agenda and Room views in addition to Week and Month views.