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.

UIElementCollection.Contains Method

Determines whether a specified element is in the UIElementCollection.

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

public virtual bool Contains (
	UIElement element
)
public boolean Contains (
	UIElement element
)
public function Contains (
	element : UIElement
) : boolean
You cannot use methods in XAML.

Parameters

element

The element to find.

Return Value

true if the specified UIElement is found in the collection; otherwise, false.

The following example uses the Contains method to determine if a specific UIElement exists within a UIElementCollection. For the complete sample, see Using Elements Sample.

void ContainsElement(object sender, RoutedEventArgs e)
{
    TextBlock txt1 = new TextBlock();
    sp1.Children.Add(txt1);
    txt1.Text = "This StackPanel contains UIElement btn1: " + sp1.Children.Contains(btn1).ToString();
}

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
Show:
© 2018 Microsoft