获取中文拼音的第一个字母！！

 实现的功能如下：我爱中国-WAZG
 1。汉字字符与英文字母之间区别
     标准的asc表不包含汉字字符，因为一个asc字符只有1byte，就是8bit，8bit所能代表的数字范围，如果是有符号的好，因该为-128-127，无符号的话，应该为0-255。而我们知道，一个汉字字符，应该占有2个byte，表示范围应该为-32768-32767,所以汉字的asc,举例一段bit:  11002111,11111101它所代表的字符，应该超过了asc所能表述的范围，这时候就会产生溢出。所以占有两个byte的汉字字符的asc码应该为负的。
2.功能实现
  using System;
  using System.Collections.Generic;
  using System.Text;
 
  namespace ConsoleApplication1
  {
      class Program
      {
          static void Main(string[] args)
         {
            Console.WriteLine(GetChineseFirstChar("我a*%爱你中国"));;
         }
         static string GetChineseFirstChar(string chineseStr)
         {
             StringBuilder sb = new StringBuilder();
             int length = chineseStr.Length;
             for (int i = 0; i < length; i++)
             {            
                 char chineseChar = chineseStr[i];
                 sb.Append(GetpyChar(chineseChar));
             }
             return sb.ToString();
         }
         static string GetpyChar(char c)
         {
             int ascCode = Microsoft.VisualBasic.Strings.Asc(c);
             int temp = 65536 + ascCode;
             if (temp >= 45217 && temp <= 45252)
             {
                 return "A";
            }
             else if (temp >= 45253 && temp <= 45760)
             {
                 return "B";
             }
             else if (temp >= 45761 && temp <= 46317)
             {
                 return "C";
             }
             else if (temp >= 46318 && temp <= 46825)
             {
                 return "D";
             }
 
 
             else if (temp >= 46826 && temp <= 47009)
             {
                 return "E";
             }
             else if (temp >= 47010 && temp <= 47296)
             {
                 return "F";
             }
             else if (temp >= 47297 && temp <= 47613)
             {
                 return "G";
             }
             else if (temp >= 47614 && temp <= 48118)
             {
                 return "H";
             }
             else if (temp >= 48119 && temp <= 49061)
             {
                 return "J";
             }
             else if (temp >= 49062 && temp <= 49323)
             {
                 return "K";
             }
             else if (temp >= 49324 && temp <= 49895)
             {
                 return "L";
             }
             else if (temp >= 49896 && temp <= 50370)
             {
                 return "M";
             }
             else if (temp >= 50371 && temp <= 50613)
             {
                 return "N";
             }
             else if (temp >= 50614 && temp <= 50621)
             {
                 return "O";
             }
            else if (temp >= 50622 && temp <= 50905)
             {
                 return "P";
             }
            else if (temp >= 50906 && temp <= 51386)
             {
                 return "Q";
             }
             else if (temp >= 51387 && temp <= 51445)
             {
                 return "R";
           }
             else if (temp >= 51446 && temp <= 52217)
            {
                return "S";
            }
            else if (temp >= 52218 && temp <= 52697)
            {
                return "T";
            }
            else if (temp >= 52698 && temp <= 52979)
            {
                return "W";
            }
            else if (temp >= 52980 && temp <= 53688)
            {
                return "X";
            }
            else if (temp >= 53689 && temp <= 54480)
            {
                return "Y";
            }
            else if (temp >= 54481 && temp <= 62289)
            {
                return "Z";
            }
            else
            {
                return c.ToString();
            }
        }
    }
}