Fires after the selected date has been changed within the date editor.
The DateChanged event's data class is EventArgs.
The DateChanged event allows you to respond to the editor's selected date being changed by an end-user.
The DateChanged event's generation depends upon the settings of the ASPxEdit.AutoPostBack property and the ASPxClientProcessingModeEventArgs.processOnServer property passed to the corresponding client ASPxClientDateEdit.DateChanged event, if it is handled. refer to the descriptions of these properties for more information.