[C.Sharp] Color 颜色转换

URL:http://www.cnblogs.com/taven/archive/2009/09/26/1574329.html

方法1：
引用命名空间：using System.Drawing;

16进制颜色代码转Color类型：ColorTranslator.FromHtml(color);

Color类型转16进制颜色代码：ColorTranslator.ToHtml(_color);

方法2：

/// <summary>
/// 将字符串转换为Color
/// </summary>
/// <param name="color">带#号的16进制颜色</param>
/// <returns></returns>
public Color ToColor(string color)
{
    int red, green, blue = 0;
    char[] rgb;
    color = color.TrimStart('#');
    color = Regex.Replace(color.ToLower(), "[g-zG-Z]", "");
    switch (color.Length)
    {
        case 3:
            rgb = color.ToCharArray();
            red = Convert.ToInt32(rgb[0].ToString() + rgb[0].ToString(), 16);
            green = Convert.ToInt32(rgb[1].ToString() + rgb[1].ToString(), 16);
            blue = Convert.ToInt32(rgb[2].ToString() + rgb[2].ToString(), 16);
            return Color.FromArgb(red, green, blue);
        case 6:
            rgb = color.ToCharArray();
            red = Convert.ToInt32(rgb[0].ToString() + rgb[1].ToString(), 16);
            green = Convert.ToInt32(rgb[2].ToString() + rgb[3].ToString(), 16);
            blue = Convert.ToInt32(rgb[4].ToString() + rgb[5].ToString(), 16);
            return Color.FromArgb(red, green, blue);
        default:
            return Color.FromName(color);
    }
}
public string ColorToHex(Color _color)
{
    //return "#" + String.Format("{0:X}", Color.FromArgb(_color.R, _color.G, _color.B).ToArgb()).Substring(2);
    //return Convert.ToString(Color.FromArgb(_color.R, _color.G, _color.B).ToArgb(), 16).Substring(2);
}