asp.net(c#) 生成汉字字符串拼音首个字母的方法

 1   using System;
 2   using System.Collections.Generic;
 3   using System.Text;
 4 
 5 
 6   //获取汉字首字母
 7         public static string GetChineseSpell(string strText)
 8         {
 9             string myStr = "";
10             if (!string.IsNullOrEmpty(strText))
11             {
12                 int len = strText.Length;
13                 for (int i = 0; i < len; i++)
14                 {
15                     myStr += getSpell(strText.Substring(i, 1));
16                 }
17             }
18             return myStr;
19         }
20         private static string getSpell(string cnChar)
21         {
22             byte[] arrCN = Encoding.Default.GetBytes(cnChar);
23             if (arrCN.Length > 1)
24             {
25                 int area = (short)arrCN[0];
26                 int pos = (short)arrCN[1];
27                 int code = (area << 8) + pos;
28                 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 };
29                 for (int i = 0; i < 26; i++)
30                 {
31                     int max = 55290;
32                     if (i != 25) max = areacode[i + 1];
33                     if (areacode[i] <= code && code < max)
34                     {
35                         return Encoding.Default.GetString(new byte[] { (byte)(65 + i) });
36                     }
37                 }
38                 return "*";
39             }
40             else return cnChar;
41         }