foreach (Screen scr_loopVariable in Screen.AllScreens) { Screen scr = scr_loopVariable; double height = scr.Bounds.Height / this.CreateGraphics().DpiY; double size = Math.Sqrt((width * width) + (height*height)); Debug.WriteLine(string.Format("Screen {0} is Size {1:0.00} inches", scr.DeviceName, size)); }
原文：http://www.cnblogs.com/tony-MSDN/p/4368009.html