UIElementCollection.Contains(UIElement) 메서드

정의

네임스페이스:

System.Windows.Controls

어셈블리:

PresentationFramework.dll

지정된 요소가 UIElementCollection에 있는지 확인합니다.

public:
 virtual bool Contains(System::Windows::UIElement ^ element);

public virtual bool Contains (System.Windows.UIElement element);

abstract member Contains : System.Windows.UIElement -> bool
override this.Contains : System.Windows.UIElement -> bool

Public Overridable Function Contains (element As UIElement) As Boolean

매개 변수

element

UIElement

찾을 요소입니다.

반환

Boolean

지정된 UIElement가 컬렉션에 있으면 true이고, 그렇지 않으면 false입니다.

예제

다음 예제에서는 합니다 Contains 특정 확인 하는 방법 UIElement 내에 있는지를 UIElementCollection합니다.

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();
}

Private Sub ClearButtons(ByVal sender As Object, ByVal e As MouseButtonEventArgs)
    sp1.Children.Clear()
    btn = New Button()
    btn.Content = "Click to clear"
    sp1.Children.Add(btn)
    AddHandler btn.Click, AddressOf Me.ClearControls
    btn1 = New Button()
    btn1.Content = "Click to clear"
    sp1.Children.Add(btn1)
    AddHandler btn1.Click, AddressOf Me.ClearControls
    btn2 = New Button()
    btn2.Content = "Click to clear"
    sp1.Children.Add(btn2)
    AddHandler btn2.Click, AddressOf Me.ClearControls
    btn3 = New Button()
    btn3.Content = "Click to clear"
    sp1.Children.Add(btn3)
    AddHandler btn3.Click, AddressOf Me.ClearControls
End Sub

Private Sub ClearControls(ByVal sender As Object, ByVal e As RoutedEventArgs)
    sp1.Children.Clear()
End Sub