How to display a custom ToolTip when hovering with the mouse over an appointment

This example illustrates how to customize an appointment ToolTip (by default, it invokes an appointment context menu). To do this, you should override a CustomAppointmentTooltip template of the ASPxScheduler (see Templates).

Basically, you can use the ASPxClientScheduler.RefreshClientAppointmentProperties Method to obtain standard and custom appointment fields (see CustomFields in AppointmentToolTip). However, in v2010 vol 2 we have implemented a simpler and more flexible mechanism for preparing arbitrary values (not only standard and custom field values) for a client-side appointment object: Provide the ability for the client appointments to always possess certain properties. In previous versions, a similar functionality can be achieved only when using custom JSProperties (see aspxscheduler tooltip).

Also, there is a CalculatePosition() method in the ASPxClientToolTipBase class. You can override it in the inheritor (custom tooltip) to provide custom coordinates as shown in the Appointment tooltip position thread.