Windows apps
Collapse the table of content
Expand the table of content
Information
The topic you requested is included in another documentation set. For convenience, it's displayed below. Choose Switch to see the topic in its original location.

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)

public event RoutedEventHandler Expanded

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

Identifier field

ExpandedEvent

Routing strategy

Bubbling

Delegate

RoutedEventHandler

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

yourExpander.Expanded += new RoutedEventHandler(expanderHasExpanded);
<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
}

.NET Framework
Available since 3.0
Return to top
Show:
© 2016 Microsoft