PreviewDrop Event
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UIElement3D.PreviewDrop Event


Occurs when the input system reports an underlying drop event with this element as the drop target.

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

Public Event PreviewDrop As DragEventHandler

This event creates an alias for the DragDrop.PreviewDrop  for this class, so that PreviewDrop is part of the class members list when UIElement3D is inherited as a base element. Event handlers that are attached to the PreviewDrop event are attached to the underlying DragDrop.PreviewDrop attached event and receive the same event data instance. GTMT

PreviewDrop is introduced in the .NET Framework version 3.5. For more information, see .NET Framework Versions and Dependencies.

Identifier field


Routing strategy




  • The corresponding  event is Drop.GTMT

  • Override OnPreviewDrop to implement class handling for this event in derived classes.

.NET Framework
Available since 3.0
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