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View this topic on docs.devexpress.com (Learn more)

Drag-and-Drop Managers

You can use Drag-and-Drop Managers to enable drag-and-drop functionality. This approach is legacy.

Note

The GridControl v17.2 and later ships with native drag-and-drop support. Set the DataViewBase.AllowDragDrop property to true to enable drag-and-drop.

Each grid view has a specific drag-and-drop manager:

Grid View Drag and Drop Manager Assembly
TableView GridDragDropManager DevExpress.Xpf.Grid.v18.2.Extensions
TreeListView TreeListDragDropManager DevExpress.Xpf.Grid.v18.2.Extensions

Expanded Enabling Drag-and-Drop

Perform the following steps to enable drag-and-drop:

  1. Add a reference to the DevExpress.Mvvm.v18.2.dll assembly and specify the corresponding namespace in XAML:

  2. Add a reference to the DevExpress.Xpf.Grid.v18.2.Extensions assembly.
  3. Add the required Drag and Drop Manager to the GridControl's Interaction.Behaviors collection:

Expanded Drag-and-Drop Managers Customization

Use the following properties to customize the drag-and-drop manager:

Property Description
AllowDrag Specifies whether an end-user can drag rows/nodes within a grid's view.
AllowDrop Specifies whether an end-user can drop rows/nodes within a grid's view.
AllowScrolling Specifies whether dragging rows/nodes to the edges of the grid's view automatically activates scrolling.

Handle the required event(s) to control drag-and-drop operations manually:

Event Description
StartDrag Occurs before a drag-and-drop operation is started. You can handle this event to prevent dragging.
DragOver Occurs repeatedly during a drag-and-drop operation. This event enables you to control whether an end-use can drop a row/node on the current position.
Drop Occurs after a drag-and-drop operation has completed.

Expanded Drag-and-Drop Managers Limitations

  • Drag-and-drop between applications is not supported.
  • You can only drag and drop records to controls with an attached DragDropManager class.

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