SuperMap.WindowsPhone.Mapping.Map.UpdateClip C# (CSharp) Method

        private void UpdateClip(Size arrangeSize)
        {
            if (!this.isClipPropertySet && (this.rootElement != null))
            {
                this.clippingRectangle = new RectangleGeometry();
                this.rootElement.Clip = this.clippingRectangle;
                this.isClipPropertySet = true;
            }
            if (this.clippingRectangle != null)
            {
                this.clippingRectangle.Rect = new Rect(0.0, 0.0, arrangeSize.Width, arrangeSize.Height);
            }
        }