C#获取汉字首字母

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 #region 取得一个汉字的拼音首字母        /// <summary>        /// 取得一个汉字的拼音首字母        /// </summary>        /// <param name="cnChar">一个字符（一般是汉字）</param>        /// <returns>拼音首字母</returns>        private static string GetFirSpell(string cnChar)        {            byte[] arrCN = Encoding.Default.GetBytes(cnChar);            if (arrCN.Length > 1)            {                int area = (short)arrCN[0];                int pos = (short)arrCN[1];                int code = (area << 8) + pos;                int[] areacode = { 45217, 45253, 45761, 46318, 46826, 47010, 47297, 47614, 48119, 48119, 49062, 49324, 49896, 50371, 50614, 50622, 50906, 51387, 51446, 52218, 52698, 52698, 52698, 52980, 53689, 54481 };                for (int i = 0; i < 26; i++)                {                    int max = 55290;                    if (i != 25) max = areacode[i + 1];                    if (areacode[i] <= code && code < max)                    {                        return Encoding.Default.GetString(new byte[] { (byte)(65 + i) });                    }                }                return "*";            }            else return cnChar;        }        #endregion
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