Control.OnDragEnter Method

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Called before the DragEnter event occurs.

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


Protected Overridable Sub OnDragEnter ( _
    e As DragEventArgs _
protected virtual void OnDragEnter(
    DragEventArgs e



The OnDragEnter method is called before any event handler for the DragEnter event is called. This method allows derived classes to handle the DragEnter event without attaching a delegate. This is the preferred technique for handling the event in a derived class.

This implementation does not change the handled state (the Handled property) of the DragEnter event data.

Notes to Inheritors

When overriding OnDragEnter in a derived class, be sure to call the base class’s OnDragEnter method so that registered delegates receive the event.

Version Information


Supported in: 5, 4

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1


For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.