[DllImport(„user32.dll”, CharSet = CharSet.Auto)]
private static extern int SystemParametersInfo(int uAction, int uParam,
string lpvParam, int fuWinIni);
private void SetWallpaper(string WallpaperPath)
{
SystemParametersInfo(20, 0, WallpaperPath, 0x01 | 0x02);
}