this.WindowState = System.Windows.WindowState.Maximized;
                double x1 = SystemParameters.PrimaryScreenWidth;//得到屏幕整体宽度
                double y1 = SystemParameters.PrimaryScreenHeight;//得到屏幕整体高度
                this.Width = x1;//设置窗体宽度
                this.Height = y;//设置窗体高度