DeleteObjectsViewController Class
Represents a ViewController descendant that contains the Delete Action.
Namespace: DevExpress.ExpressApp.SystemModule
Assembly: DevExpress.ExpressApp.v25.2.dll
NuGet Package: DevExpress.ExpressApp
Declaration
Remarks
The DeleteObjectsViewController contains the Delete Action.
In a Windows Forms application:
For details on the Delete Action, refer to the following topic: DeleteObjectsViewController.DeleteAction.
To customize the default behavior of the Delete Action, you can inherit from this Controller or subscribe to its events. In addition, you can access the Action to modify its behavior.
If you need to inherit from the DeleteObjectsViewController, the following protected virtual methods are available for overriding:
Method | When is it called? | Description |
|---|---|---|
Delete | Invoked as a result of executing the Delete Action. | The Delete Action’s SimpleAction.Execute event handler. Deletes the object(s) selected in the current View. In case of a List View, this method refreshes the collection source and editor. In case of a Detail View, the method closes it. Raises the DeleteObjectsViewController.Deleting event. |
UpdateActionState | Invoked as a result of changes made to the current View’s object(s): | Checks whether the Delete Action’s active or enabled state should be changed after the environment has been changed. |
Public members are described individually in the documentation.
This Controller is activated for all Views. To ascertain whether the Controller is active, use the Controller.Active property. If you need to know the reason for its deactivation or activation at runtime, use the DiagnosticInfo Action.