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   [Expand]BeginDragDropEventArgs Class
    DragDropActions Enumeration
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   [Expand]DragDropBehaviorBase<TDragDropBehaviorSource, TDragDropBehaviorProperties> Class
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     DragDropEvents Members
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 End-User Documentation
View this topic on docs.devexpress.com (Learn more)

DragDropEvents Class

Provides access to a control's Drag-and-Drop Behavior events.

Namespace:DevExpress.Utils.DragDrop
Assembly:DevExpress.Utils.v19.2.dll

Expanded Syntax

Expanded Remarks

The DragDropEvents component is automatically added to your form when you attach the Drag-and-Drop Behavior to a control in the designer. You can find the component's name in the Behavior editor's Properties section.

You can add event handlers in the designer or in code.

If you attach the Behavior in code, the DragDropEvents component is not added to the form. Use the DragDropBehavior events to customize drag-and-drop operations in this case.

Expanded Example

The Drag-and-Drop Behavior allows you to support drag-and-drop operations between detail views in a grid control.

To allow users to move child rows between detail views, do the following:

  • Attach the Behavior to the master view in the Visual Studio Designer or in code.
  • Use the GridControl.ViewRegistered event — to attach the Behavior to the detail view. To detach the Behavior, use the GridControl.ViewRemoved event.
  • Handle the DragDrop event of the Behavior attached to the master view — to move the processed child row from the source detail view to the target detail view.

The code below shows how to implement this approach. It is assumed the behavior Manager is placed to the component tray and the Behavior Manager is attached to the main view in the Visual Studio Designer.

Expanded Inheritance Hierarchy

System.Object
    System.MarshalByRefObject
       System.ComponentModel.Component
          DragDropEvents

Expanded See Also

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