字符串转成颜色

2015-10-27 17:00:56  访问(2236) 赞(0) 踩(0)

/// <summary>
        /// 字符串转成颜色
        /// </summary>
        /// <param name="str"></param>
        /// <param name="defaultColor"></param>
        /// <returns></returns>
        protected System.Drawing.Color ConvertColor
            (
                string str, 
                System.Drawing.Color defaultColor
            )
        {
            if (str == null || str.Length == 0)
                return defaultColor;

            str = str.Trim();

            if (str.Length == 0)
                return defaultColor;

            if (!str.StartsWith("#"))
                return defaultColor;

            str = str.Substring(1);

            if (str.Length != 6)
                return defaultColor;

            int red = Int32.Parse(str.Substring(0, 2), System.Globalization.NumberStyles.HexNumber);
            int green = Int32.Parse(str.Substring(2, 2), System.Globalization.NumberStyles.HexNumber);
            int blue = Int32.Parse(str.Substring(4, 2), System.Globalization.NumberStyles.HexNumber);

            return System.Drawing.Color.FromArgb(red, green, blue);
        }

        /// <summary>
        /// 颜色转换成#RRGGBB格式
        /// </summary>
        /// <param name="theValue"></param>
        /// <returns></returns>
        public string ColorToString(System.Drawing.Color theValue)
        {
            return "#" + theValue.R.ToString("x2") + theValue.G.ToString("x2") + theValue.B.ToString("x2");
        }

标签：字符串转成颜色 

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