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Expander.Expanded Event

Occurs when the content window of an Expander control opens to display both its header and content.

Namespace: System.Windows.Controls
Assembly: PresentationFramework (in presentationframework.dll)
XML Namespace:  http://schemas.microsoft.com/winfx/2006/xaml/presentation

public event RoutedEventHandler Expanded
/** @event */
public void add_Expanded (RoutedEventHandler value)

/** @event */
public void remove_Expanded (RoutedEventHandler value)

In JScript, you can handle the events defined by a class, but you cannot define your own.
<object Expanded="RoutedEventHandler" .../>

Identifier Field

ExpandedEvent

Routing Strategy

bubbling

Delegate

RoutedEventHandler

The Expanded event occurs when the IsExpanded property changes from false to true.

The following example shows how to specify the event handler for the Expanded event.

<Expander Name ="yourExpander" Expanded="expanderHasExpanded" 
          Header ="expanderTitle" Content="expanderContent"/>

The following example shows how to define the event handler.

private void expanderHasExpanded(object sender, RoutedEventArgs args)
{
    //Do something when the Expander control expands
}

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0

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