public static void Main()
 {
     for (int i = 0; i < 6; i++)
     {
         DisplayDevice dev = DisplayDevice.GetDisplay(DisplayIndex.First + i);
         if (dev != null)
         {
             Trace.WriteLine(dev.ToString());
             MessageBox.Show(dev.ToString());
             dev.ChangeResolution(dev.SelectResolution(640, 480, 32, 60.0f));
             Thread.Sleep(1000);
             MessageBox.Show(dev.ToString());
             dev.RestoreResolution();
             Thread.Sleep(1000);
             MessageBox.Show(dev.ToString());
         }
     }
 }