找控件的父类

 private TestTabControl TabControlParent
        {
            get
            {
                TestTabControl parent = base.Parent as TestTabControl;
                if (parent != null)
                {
                    return parent;
                }
                for (DependencyObject obj2 = this; obj2 != null; obj2 = VisualTreeHelper.GetParent(obj2))
                {
                    TestTabControl control2 = obj2 as TestTabControl;
                    if (control2 != null)
                    {
                        return control2;
                    }
                }
                return null;
            }
        }