windowsforms-devexpress-dot-xtrascheduler-dot-schedulercontrol-bc3264aa.md
Occurs before the Appointment Dependency dialog window is invoked.
Namespace : DevExpress.XtraScheduler
Assembly : DevExpress.XtraScheduler.v25.2.dll
NuGet Package : DevExpress.Win.Scheduler
public event AppointmentDependencyFormEventHandler EditAppointmentDependencyFormShowing
Public Event EditAppointmentDependencyFormShowing As AppointmentDependencyFormEventHandler
The EditAppointmentDependencyFormShowing event's data class is AppointmentDependencyFormEventArgs. The following properties provide information specific to this event:
| Property | Description |
|---|---|
| AppointmentDependency | Gets the appointment dependency for which the dialog will be shown. |
| CommandSourceType | Indicates the mechanism of the command input, e.g. keyboard, mouse, menu. |
| DialogResult | Gets or sets the return value of a dialog box. Inherited from ShowFormEventArgs. |
| Handled | Gets or sets whether an event was handled, if it was handled the default actions are not required. Inherited from ShowFormEventArgs. |
| Parent | Gets or sets a parent of the form being shown. Inherited from ShowFormEventArgs. |
| ReadOnly | Gets a value indicating whether an appointment dependency is read-only. |
Handle the EditAppointmentDependencyFormShowing event to perform any actions prior to the Appointment Dependency dialog being shown. You can specify a custom dialog in place of the standard one or not display a dialog at all.
This dialog can be invoked either in the GanttView view by an end-user, or via the SchedulerControl.ShowEditAppointmentDependencyForm method. Note that the appointment dependency which will be edited in this dialog window can be specified via the AppointmentDependencyFormEventArgs.AppointmentDependency property.
See Also