获取汉字拼音首字母

private  string getPinYin(string text)
 2        {
 3            char pinyin;
 4            byte[] array;
 5            System.Text.StringBuilder sb = new System.Text.StringBuilder(text.Length); 
 6            foreach(char c in text)
 7            {
 8                pinyin = c;
 9                array = System.Text.Encoding.Default.GetBytes(new char[]{c});
10
11                if(array.Length == 2)
12                {
13                    int i = array[0] * 0x100 + array[1];
14
15                    if(i < 0xB0A1) pinyin = c; else
16                        if(i < 0xB0C5) pinyin = 'a'; else
17                        if(i < 0xB2C1) pinyin = 'b'; else
18                        if(i < 0xB4EE) pinyin = 'c'; else
19                        if(i < 0xB6EA) pinyin = 'd'; else
20                        if(i < 0xB7A2) pinyin = 'e'; else
21                        if(i < 0xB8C1) pinyin = 'f'; else
22                        if(i < 0xB9FE) pinyin = 'g'; else
23                        if(i < 0xBBF7) pinyin = 'h'; else
24                        if(i < 0xBFA6) pinyin = 'g'; else
25                        if(i < 0xC0AC) pinyin = 'k'; else
26                        if(i < 0xC2E8) pinyin = 'l'; else
27                        if(i < 0xC4C3) pinyin = 'm'; else
28                        if(i < 0xC5B6) pinyin = 'n'; else
29                        if(i < 0xC5BE) pinyin = 'o'; else
30                        if(i < 0xC6DA) pinyin = 'p'; else
31                        if(i < 0xC8BB) pinyin = 'q'; else
32                        if(i < 0xC8F6) pinyin = 'r'; else
33                        if(i < 0xCBFA) pinyin = 's'; else
34                        if(i < 0xCDDA) pinyin = 't'; else
35                        if(i < 0xCEF4) pinyin = 'w'; else
36                        if(i < 0xD1B9) pinyin = 'x'; else
37                        if(i < 0xD4D1) pinyin = 'y'; else
38                        if(i < 0xD7FA) pinyin = 'z';
39                }
40
41                sb.Append(pinyin);
42            }
43
44            return sb.ToString();
45        }