static void Main(string[] args)
{
DesktopWallpaper wallpaper = new DesktopWallpaper();
string imageLocation = @"C:\Windows\Web\Wallpaper\Theme2\img11.jpg";
uint monitorCount = wallpaper.GetMonitorDevicePathCount();
string monitorDevicePath = wallpaper.GetMonitorDevicePathAt(1);
wallpaper.SetWallpaper(monitorDevicePath, imageLocation);
Console.Read();
}
