ItemDragEventHandler Delegate

 

Represents the method that will handle the ItemDrag event of a ListView or TreeView control.

Namespace:   System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

type ItemDragEventHandler = 
    delegate of 
        sender:Object *
        e:ItemDragEventArgs -> unit

Parameters

sender
Type: System.Object

The source of the event.

e
Type: System.Windows.Forms.ItemDragEventArgs

An ItemDragEventArgs that contains the event data.

When you create an ItemDragEventHandler delegate, you identify the method that will handle the event. To associate the event with your event handler, add an instance of the delegate to the event. The event handler is called whenever the event occurs, unless you remove the delegate. For more information about event handler delegates, see Handling and Raising Events.

The following example demonstrates how to enable drag-and-drop operations within a TreeView control. In the example, any node can be dragged to another node that is not a descendant of the dragged node. The dragged node, including all of its descendant nodes, becomes a child of the destination node. When the left mouse button is used, the dragged node is moved to the destination node. When the right mouse button is used, the dragged node is copied to the destination node.

No code example is currently available or this language may not be supported.

.NET Framework
Available since 1.1
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