怎樣取得一個UIElement的位置?

[morren]

在一個Silverlight應用裡,有一個UIElement在裡面,請問怎樣才能取得這個UIElement在流覽器的絕對位置呢?
謝謝!!

[jv9]

获取控件的上坐标和左坐标,把This替换成你要定位的控件就可以了.

GeneralTransform gt = this.TransformToVisual(Application.Current.RootVisual as UIElement);
Point offset = gt.Transform(new Point(0, 0));
double controlTop = offset.Y;
double controlLeft = offset.X;

另外一个方法,可以获取控件四个点的坐标.

GeneralTransform gt = element.TransformToVisual(Application.Current.RootVisual);
Point topLeft = gt.Transform(new Point(0, 0));
Point topRight = gt.Transform(new Point(element.RenderSize.Width, 0));
Point bottomLeft = gt.Transform(new Point(0, element.RenderSize.Height));
Point bottomRight = gt.Transform(new Point(element.RenderSize.Width, element.RenderSize.Height));