取漢字拼音首字母(C#)

/// <summary>
  /// 漢字轉拼音縮寫
  /// /// Code By MuseStudio@hotmail.com
  /// /// 2004-11-30/// </summary>/// <param name="str">要轉換的漢字字串</param>
  /// /// <returns>拼音縮寫</returns>
  public string GetPYString(string str)
  {   
   string tempStr = "";  
   foreach(char c in str)  
   {        if((int)c >= 33 && (int)c <=126)      
      {//字母和符號原樣保留          
       tempStr += c.ToString();      
      }        else  
      {//累加拼音聲母    
       tempStr += GetPYChar(c.ToString());
      }   
   }  
   return tempStr;
  }
  /// <summary>
  /// /// 取單個字元的拼音聲母/// Code By MuseStudio@hotmail.com
  /// /// 2004-11-30/// </summary>/// <param name="c">要轉換的單個漢字</param>
  /// /// <returns>拼音聲母</returns>
  public string GetPYChar(string c)
  {  
   byte[] array = new byte[2];   
   array = System.Text.Encoding.Default.GetBytes(c);  
   int i = (short)(array[0] - '\0') * 256 + ((short)(array[1] - '\0'));  
   if ( i < 0xB0A1) return "*";   
   if ( i < 0xB0C5) return "a";  
   if ( i < 0xB2C1) return "b";   
   if ( i < 0xB4EE) return "c";   
   if ( i < 0xB6EA) return "d";  
   if ( i < 0xB7A2) return "e";   
   if ( i < 0xB8C1) return "f";  
   if ( i < 0xB9FE) return "g";  
   if ( i < 0xBBF7) return "h";  
   if ( i < 0xBFA6) return "g";   
   if ( i < 0xC0AC) return "k";  
   if ( i < 0xC2E8) return "l";  
   if ( i < 0xC4C3) return "m";   
   if ( i < 0xC5B6) return "n";   
   if ( i < 0xC5BE) return "o";   
   if ( i < 0xC6DA) return "p";  
   if ( i < 0xC8BB) return "q";   
   if ( i < 0xC8F6) return "r";  
   if ( i < 0xCBFA) return "s";  
   if ( i < 0xCDDA) return "t";   
   if ( i < 0xCEF4) return "w";   
   if ( i < 0xD1B9) return "x";   
   if ( i < 0xD4D1) return "y";  
   if ( i < 0xD7FA) return "z";  
   return "*";
  }

其它參考：http://study.okshare.net/it/IT11/Article_13915.html
http://www.hur.cn/bbs/dispbbs.asp?boardid=2&id=48862&page=1
http://bbs.veryer.com/2434/ShowPost.aspx用C#實現獲得漢字的拼音首字母