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TreeViewControl.ContinueRecordDrag Event

Occurs when a user presses the keyboard or mouse buttons during a drag-and-drop operation. The event allows you to cancel this operation depending on the key/button states.

Namespace: DevExpress.Xpf.Grid

Assembly: DevExpress.Xpf.Grid.v20.2.dll

Declaration

public event EventHandler<ContinueRecordDragEventArgs> ContinueRecordDrag

Event Data

The ContinueRecordDrag event's data class is ContinueRecordDragEventArgs. The following properties provide information specific to this event:

Property Description
Action Gets or sets the status of a drag-and-drop operation.
Data Gets or sets a data object that contains data associated with the DataViewBase.ContinueRecordDrag event.
EscapePressed Gets whether the user pressed the ESC key.
Handled Gets or sets a value that indicates the present state of the event handling for a routed event as it travels the route. Inherited from RoutedEventArgs.
KeyStates Gets a flag enumeration indicating the current state of the SHIFT, CTRL, and ALT keys, as well as the state of the mouse buttons.
OriginalSource Gets the original reporting source as determined by pure hit testing, before any possible Source adjustment by a parent class. Inherited from RoutedEventArgs.
RoutedEvent Gets or sets the RoutedEvent associated with this RoutedEventArgs instance. Inherited from RoutedEventArgs.
Source Gets or sets a reference to the object that raised the event. Inherited from RoutedEventArgs.

The event data class exposes the following methods:

Method Description
InvokeEventHandler(Delegate, Object) When overridden in a derived class, provides a way to invoke event handlers in a type-specific way, which can increase efficiency over the base implementation. Inherited from RoutedEventArgs.
OnSetSource(Object) When overridden in a derived class, provides a notification callback entry point whenever the value of the Source property of an instance changes. Inherited from RoutedEventArgs.

Remarks

The TreeViewControl raises the ContinueRecordDrag event continuously while a user drags a record. You can handle this event to determine what action ends the drag-and-drop operation based on the state of the ESC, SHIFT, CTRL, and ALT keys, and the state of the mouse buttons.

The default handler for this event cancels the drag-and-drop operation if a user presses the ESC key, and drops the data if a user releases the mouse button.

For information about drag-and-drop operations, refer to the following DevExpress WPF Grid help topic: Drag-and-Drop.

See Also