Visual.VisualChildrenCount 屬性

protected:
 virtual property int VisualChildrenCount { int get(); };

protected virtual int VisualChildrenCount { get; }

member this.VisualChildrenCount : int

Protected Overridable ReadOnly Property VisualChildrenCount As Integer

屬性值

子元素的數量。

範例

以下範例定義了 的 VisualChildrenCount覆寫實作。

// Provide a required override for the VisualChildrenCount property.
protected override int VisualChildrenCount
{
    get { return _children.Count; }
}

' Provide a required override for the VisualChildrenCount property.
Protected Overrides ReadOnly Property VisualChildrenCount() As Integer
    Get
        Return _children.Count
    End Get
End Property

備註

預設情況下，a Visual 沒有子女。 因此，預設實作總是回傳 0。

給繼承者的注意事項

由 衍生 Visual 的類別必須覆蓋此性質及 GetVisualChild(Int32) 方法，才能正確列舉視覺樹。