C# --通过枚举获取系统颜色

        public static System.Drawing.Color GetSystemColor(int i)
        {
            Array Colors = System.Enum.GetValues(typeof(System.Drawing.KnownColor));
            System.Drawing.KnownColor[] allColors = new System.Drawing.KnownColor[Colors.Length];
            Array.Copy(Colors, allColors, Colors.Length);
if (i < Colors.Length) { return System.Drawing.Color.FromName(allColors[i].ToString()); }
                else { return System.Drawing.Color.Red; }
}