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    标题可能不太清楚，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
  1using System;
  2using System.Collections.Generic;
  3using System.Text;
  4
  5namespace ConsoleApplication1
  6{
  7    class Program
  8    {
  9        static void Main(string[] args)
10        {
11            Console.WriteLine(GetChineseFirstChar("我a*%爱你中国"));;
12        }
13        static string GetChineseFirstChar(string chineseStr)
14        {
15            StringBuilder sb = new StringBuilder();
16            int length = chineseStr.Length;
17            for (int i = 0; i < length; i  )
18            {            
19                char chineseChar = chineseStr[i];
20                sb.Append(GetpyChar(chineseChar));
21            }
22            return sb.ToString();
23        }
24        static string GetpyChar(char c)
25        {
26            int ascCode = Microsoft.VisualBasic.Strings.Asc(c);
27            int temp = 65536   ascCode;
28            if (temp >= 45217 && temp <= 45252)
29            {
30                return "A";
31            }
32            else if (temp >= 45253 && temp <= 45760)
33            {
34                return "B";
35            }
36            else if (temp >= 45761 && temp <= 46317)
37            {
38                return "C";
39            }
40            else if (temp >= 46318 && temp <= 46825)
41            {
42                return "D";
43            }
44
45
46            else if (temp >= 46826 && temp <= 47009)
47            {
48                return "E";
49            }
50            else if (temp >= 47010 && temp <= 47296)
51            {
52                return "F";
53            }
54            else if (temp >= 47297 && temp <= 47613)
55            {
56                return "G";
57            }
58            else if (temp >= 47614 && temp <= 48118)
59            {
60                return "H";
61            }
62            else if (temp >= 48119 && temp <= 49061)
63            {
64                return "J";
65            }
66            else if (temp >= 49062 && temp <= 49323)
67            {
68                return "K";
69            }
70            else if (temp >= 49324 && temp <= 49895)
71            {
72                return "L";
73            }
74            else if (temp >= 49896 && temp <= 50370)
75            {
76                return "M";
77            }
78            else if (temp >= 50371 && temp <= 50613)
79            {
80                return "N";
81            }
82            else if (temp >= 50614 && temp <= 50621)
83            {
84                return "O";
85            }
86            else if (temp >= 50622 && temp <= 50905)
87            {
88                return "P";
89            }
90            else if (temp >= 50906 && temp <= 51386)
91            {
92                return "Q";
93            }
94            else if (temp >= 51387 && temp <= 51445)
95            {
96                return "R";
97            }
98            else if (temp >= 51446 && temp <= 52217)
99            {
100                return "S";
101            }
102            else if (temp >= 52218 && temp <= 52697)
103            {
104                return "T";
105            }
106            else if (temp >= 52698 && temp <= 52979)
107            {
108                return "W";
109            }
110            else if (temp >= 52980 && temp <= 53688)
111            {
112                return "X";
113            }
114            else if (temp >= 53689 && temp <= 54480)
115            {
116                return "Y";
117            }
118            else if (temp >= 54481 && temp <= 62289)
119            {
120                return "Z";
121            }
122            else
123            {
124                return c.ToString();
125            }
126        }
127    }
128}
129

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