Článek
11/18/2011

Control.OnDragOver Method

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Called before the DragOver event occurs.

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

Syntax

'Declaration
Protected Overridable Sub OnDragOver ( _
    e As DragEventArgs _
)

protected virtual void OnDragOver(
    DragEventArgs e
)

Parameters

e
Type: System.Windows.DragEventArgs
A DragEventArgsthat contains the event data.

Remarks

The OnDragOver method is called before any event handler for the DragOver event is called. This method allows derived classes to handle the DragOver 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 DragOver event data.

Notes to Inheritors

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

Version Information

Silverlight

Supported in: 5, 4

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1

Platforms

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

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