ActivityPreviewDesigner.OnDragEnter Method (ActivityDragEventArgs)

 

Notifies the ActivityPreviewDesigner when a drag-drop operation is in progress and the user's mouse cursor enters the bounds of the designer.

Namespace:   System.Workflow.ComponentModel.Design
Assembly:  System.Workflow.ComponentModel (in System.Workflow.ComponentModel.dll)

protected override void OnDragEnter(
	ActivityDragEventArgs e
)

Exception Condition
ArgumentNullException

e contains a null reference (Nothing in Visual Basic).

.NET Framework
Available since 3.0
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