How to invoke different forms via the popup menu

Problem:

I'd like to customize the popup menu so that it contains additional menu items and clicking on them invokes my custom controls (web forms).

Solution:

Explore this example to see how you can accomplish this task. Right-click the appointment to see custom menu items which invoke user forms.
The code uses PreparePopupMenu event to modify the default menu, and AppointmentFormShowing event to specify the forms to show. The server callback is performed with the MyMenuAppointmentCallbackCommand class instance, inherited from the DevExpress.Web.ASPxScheduler.Internal.MenuAppointmentCallbackCommand class.