Articolo
11/18/2011

TreeView.OnSelectedItemChanged Method

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Raises the SelectedItemChanged event when the SelectedItem property value changes.

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

Syntax

'Declaration
Protected Overridable Sub OnSelectedItemChanged ( _
    e As RoutedPropertyChangedEventArgs(Of Object) _
)

protected virtual void OnSelectedItemChanged(
    RoutedPropertyChangedEventArgs<Object> e
)

Parameters

e
Type: System.Windows.RoutedPropertyChangedEventArgs<Object>
A RoutedPropertyChangedEventArgs<T> that contains the event data.

Remarks

Raising an event invokes the event handler through a delegate. The OnSelectedItemChanged method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.

Notes to Inheritors

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

Version Information

Silverlight

Supported in: 5, 4, 3

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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