Expander.Expanded Event

Reference

Definition

Namespace:: System.Windows.Controls

Assembly:: PresentationFramework.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

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

public:
 event System::Windows::RoutedEventHandler ^ Expanded;

public event System.Windows.RoutedEventHandler Expanded;

member this.Expanded : System.Windows.RoutedEventHandler

Public Custom Event Expanded As RoutedEventHandler

Event Type

RoutedEventHandler

Examples

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

yourExpander.Expanded += new RoutedEventHandler(expanderHasExpanded);

AddHandler yourExpander.Expanded, AddressOf expanderHasExpanded

XAML

<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
}

Private Sub expanderHasExpanded(ByVal sender As Object, ByVal args As RoutedEventArgs)
    'Do something when the Expander control expands
End Sub

Remarks

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

Routed Event Information

Item	Value
Identifier field	ExpandedEvent
Routing strategy	Bubbling
Delegate	RoutedEventHandler

Applies to

Product	Versions
.NET Framework	3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
Windows Desktop	3.0, 3.1, 5, 6, 7, 8, 9, 10

Share via