Asp.net gets the first letter of Chinese pinyin

Asp tutorial. net get the first letter of Chinese pinyin
It provides a classic function for getting the first letter of Chinese characters and pinyin.

Public string GetPYChar (string c)
{
Byte [] array = new byte [2];
Array = System. Text. Encoding. Default. GetBytes (c );
Int I = (short) (array [0]-'') * 256 + (short) (array [1]-'');

If (I <0xB0A1) return "*";
If (I <0xB0C5) return "";
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 <0 xCBFA) return "s ";
If (I <0 xCDDA) return "t ";
If (I <0xCEF4) return "w ";
If (I <0xD1B9) return "x ";
If (I <0xD4D1) return "y ";
If (I <0xD7FA) return "z ";
Return "*";
}