C# 汉字转拼音(全拼和首字母)实例
（一）将汉字转化成全拼
代码：
private void button1_click(object sender, eventargs e)
{
this.textbox2.text = hz2py.convert(this.textbox1.text);
}
汉字转拼音类：
/// <summary>
/// 汉字转拼音类
/// </summary>
public class hz2py
{
private static int[] pyvalue = new int[]
{
-20319,-20317,-20304,-20295,-20292,-20283,-20265,-20257,-20242,-20230,-20051,-20036,
-20032,-20026,-20002,-19990,-19986,-19982,-19976,-19805,-19784,-19775,-19774,-19763,
-19756,-19751,-19746,-19741,-19739,-19728,-19725,-19715,-19540,-19531,-19525,-19515,
-19500,-19484,-19479,-19467,-19289,-19288,-19281,-19275,-19270,-19263,-19261,-19249,
-19243,-19242,-19238,-19235,-19227,-19224,-19218,-19212,-19038,-19023,-19018,-19006,
-19003,-18996,-18977,-18961,-18952,-18783,-18774,-18773,-18763,-18756,-18741,-18735,
-18731,-18722,-18710,-18697,-18696,-18526,-18518,-18501,-18490,-18478,-18463,-18448,
-18447,-18446,-18239,-18237,-18231,-18220,-18211,-18201,-18184,-18183, -18181,-18012,
-17997,-17988,-17970,-17964,-17961,-17950,-17947,-17931,-17928,-17922,-17759,-17752,
-17733,-17730,-17721,-17703,-17701,-17697,-17692,-17683,-17676,-17496,-17487,-17482,
-17468,-17454,-17433,-17427,-17417,-17202,-17185,-16983,-16970,-16942,-16915,-16733,
-16708,-16706,-16689,-16664,-16657,-16647,-16474,-16470,-16465,-16459,-16452,-16448,
-16433,-16429,-16427,-16423,-16419,-16412,-16407,-16403,-16401,-16393,-16220,-16216,
-16212,-16205,-16202,-16187,-16180,-16171,-16169,-16158,-16155,-15959,-15958,-15944,
-15933,-15920,-15915,-15903,-15889,-15878,-15707,-15701,-15681,-15667,-15661,-15659,
-15652,-15640,-15631,-15625,-15454,-15448,-15436,-15435,-15419,-15416,-15408,-15394,
-15385,-15377,-15375,-15369,-15363,-15362,-15183,-15180,-15165,-15158,-15153,-15150,
-15149,-15144,-15143,-15141,-15140,-15139,-15128,-15121,-15119,-15117,-15110,-15109,
-14941,-14937,-14933,-14930,-14929,-14928,-14926,-14922,-14921,-14914,-14908,-14902,
-14894,-14889,-14882,-14873,-14871,-14857,-14678,-14674,-14670,-14668,-14663,-14654,
-14645,-14630,-14594,-14429,-14407,-14399,-14384,-14379,-14368,-14355,-14353,-14345,
-14170,-14159,-14151,-14149,-14145,-14140,-14137,-14135,-14125,-14123,-14122,-14112,
-14109,-14099,-14097,-14094,-14092,-14090,-14087,-14083,-13917,-13914,-13910,-13907,
-13906,-13905,-13896,-13894,-13878,-13870,-13859,-13847,-13831,-13658,-13611,-13601,
-13406,-13404,-13400,-13398,-13395,-13391,-13387,-13383,-13367,-13359,-13356,-13343,
-13340,-13329,-13326,-13318,-13147,-13138,-13120,-13107,-13096,-13095,-13091,-13076,
-13068,-13063,-13060,-12888,-12875,-12871,-12860,-12858,-12852,-12849,-12838,-12831,
-12829,-12812,-12802,-12607,-12597,-12594,-12585,-12556,-12359,-12346,-12320,-12300,
-12120,-12099,-12089,-12074,-12067,-12058,-12039,-11867,-11861,-11847,-11831,-11798,
-11781,-11604,-11589,-11536,-11358,-11340,-11339,-11324,-11303,-11097,-11077,-11067,
-11055,-11052,-11045,-11041,-11038,-11024,-11020,-11019,-11018,-11014,-10838,-10832,
-10815,-10800,-10790,-10780,-10764,-10587,-10544,-10533,-10519,-10331,-10329,-10328,
-10322,-10315,-10309,-10307,-10296,-10281,-10274,-10270,-10262,-10260,-10256,-10254
};
private static string[] pyname = new string[]
{
"a","ai","an","ang","ao","ba","bai","ban","bang","bao","bei","ben",
"beng","bi","bian","biao","bie","bin","bing","bo","bu","ba","cai","can",
"cang","cao","ce","ceng","cha","chai","chan","chang","chao","che","chen","cheng",
"chi","chong","chou","chu","chuai","chuan","chuang","chui","chun","chuo","ci","cong",
"cou","cu","cuan","cui","cun","cuo","da","dai","dan","dang","dao","de",
"deng","di","dian","diao","die","ding","diu","dong","dou","du","duan","dui",
"dun","duo","e","en","er","fa","fan","fang","fei","fen","feng","fo",
"fou","fu","ga","gai","gan","gang","gao","ge","gei","gen","geng","gong",
"gou","gu","gua","guai","guan","guang","gui","gun","guo","ha","hai","han",
"hang","hao","he","hei","hen","heng","hong","hou","hu","hua","huai","huan",
"huang","hui","hun","huo","ji","jia","jian","jiang","jiao","jie","jin","jing",
"jiong","jiu","ju","juan","jue","jun","ka","kai","kan","kang","kao","ke",
"ken","keng","kong","kou","ku","kua","kuai","kuan","kuang","kui","kun","kuo",
"la","lai","lan","lang","lao","le","lei","leng","li","lia","lian","liang",
"liao","lie","lin","ling","liu","long","lou","lu","lv","luan","lue","lun",
"luo","ma","mai","man","mang","mao","me","mei","men","meng","mi","mian",
"miao","mie","min","ming","miu","mo","mou","mu","na","nai","nan","nang",
"nao","ne","nei","nen","neng","ni","nian","niang","niao","nie","nin","ning",
"niu","nong","nu","nv","nuan","nue","nuo","o","ou","pa","pai","pan",
"pang","pao","pei","pen","peng","pi","pian","piao","pie","pin","ping","po",
"pu","qi","qia","qian","qiang","qiao","qie","qin","qing","qiong","qiu","qu",
"quan","que","qun","ran","rang","rao","re","ren","reng","ri","rong","rou",
"ru","ruan","rui","run","ruo","sa","sai","san","sang","sao","se","sen",
"seng","sha","shai","shan","shang","shao","she","shen","sheng","shi","shou","shu",
"shua","shuai","shuan","shuang","shui","shun","shuo","si","song","sou","su","suan",
"sui","sun","suo","ta","tai","tan","tang","tao","te","teng","ti","tian",
"tiao","tie","ting","tong","tou","tu","tuan","tui","tun","tuo","wa","wai",
"wan","wang","wei","wen","weng","wo","wu","xi","xia","xian","xiang","xiao",
"xie","xin","xing","xiong","xiu","xu","xuan","xue","xun","ya","yan","yang",
"yao","ye","yi","yin","ying","yo","yong","you","yu","yuan","yue","yun",
"za", "zai","zan","zang","zao","ze","zei","zen","zeng","zha","zhai","zhan",
"zhang","zhao","zhe","zhen","zheng","zhi","zhong","zhou","zhu","zhua","zhuai","zhuan",
"zhuang","zhui","zhun","zhuo","zi","zong","zou","zu","zuan","zui","zun","zuo"
};
/// <summary>
/// 把汉字转换成拼音(全拼)
/// </summary>
/// <param name="hzstring">汉字字符串</param>
/// <returns>转换后的拼音(全拼)字符串</returns>
public static string convert(string hzstring)
{
// 匹配中文字符
regex regex = new regex("^[\u4e00-\u9fa5]$");
byte[] array = new byte[2];
string pystring = "";
int chrasc = 0;
int i1 = 0;
int i2 = 0;
char[] nowchar = hzstring.tochararray();
for (int j = 0; j < nowchar.length; j++)
{
// 中文字符
if (regex.ismatch(nowchar[j].tostring()))
{
array = system.text.encoding.default.getbytes(nowchar[j].tostring());
i1 = (short)(array[0]);
i2 = (short)(array[1]);
chrasc = i1 * 256 + i2 - 65536;
if (chrasc > 0 && chrasc < 160)
{
pystring += nowchar[j];
}
else
{
// 修正部分文字
if (chrasc == -9254) // 修正“圳”字
pystring += "zhen";
else
{
for (int i = (pyvalue.length - 1); i >= 0; i--)
{
if (pyvalue[i] <= chrasc)
{
pystring += pyname[i];
break;
}
}
}
}
}
// 非中文字符
else
{
pystring += nowchar[j].tostring();
}
}
return pystring;
}
}
补充：一些生僻字转不了，比如：“睿”和“罡”字等。
（二）将汉字转化成首字母序列
/// <summary>
/// 得到一个汉字的拼音第一个字母，如果是一个英文字母则直接返回大写字母
/// </summary>
/// <param name="cnchar">单个汉字</param>
/// <returns>单个大写字母</returns>
private static string getcharspellcode(string cnchar)
{
long icnchar;
byte[] zw = system.text.encoding.default.getbytes(cnchar);
//如果是字母，则直接返回
if (zw.length == 1)
{
return cnchar.toupper();
}
else
{
// get the array of byte from the single char
int i1 = (short)(zw[0]);
int i2 = (short)(zw[1]);
icnchar = i1 * 256 + i2;
}
#region table of the constant list
//expresstion
//table of the constant list
// 'a'; //45217..45252
// 'b'; //45253..45760
// 'c'; //45761..46317
// 'd'; //46318..46825
// 'e'; //46826..47009
// 'f'; //47010..47296
// 'g'; //47297..47613
// 'h'; //47614..48118
// 'j'; //48119..49061
// 'k'; //49062..49323
// 'l'; //49324..49895
// 'm'; //49896..50370
// 'n'; //50371..50613
// 'o'; //50614..50621
// 'p'; //50622..50905
// 'q'; //50906..51386
// 'r'; //51387..51445
// 's'; //51446..52217
// 't'; //52218..52697
//没有u,v
// 'w'; //52698..52979
// 'x'; //52980..53640
// 'y'; //53689..54480
// 'z'; //54481..55289
#endregion
// icnchar match the constant
if ((icnchar >= 45217) && (icnchar <= 45252))
{
return "a";
}
else if ((icnchar >= 45253) && (icnchar <= 45760))
{
return "b";
}
else if ((icnchar >= 45761) && (icnchar <= 46317))
{
return "c";
}
else if ((icnchar >= 46318) && (icnchar <= 46825))
{
return "d";
}
else if ((icnchar >= 46826) && (icnchar <= 47009))
{
return "e";
}
else if ((icnchar >= 47010) && (icnchar <= 47296))
{
return "f";
}
else if ((icnchar >= 47297) && (icnchar <= 47613))
{
return "g";
}
else if ((icnchar >= 47614) && (icnchar <= 48118))
{
return "h";
}
else if ((icnchar >= 48119) && (icnchar <= 49061))
{
return "j";
}
else if ((icnchar >= 49062) && (icnchar <= 49323))
{
return "k";
}
else if ((icnchar >= 49324) && (icnchar <= 49895))
{
return "l";
}
else if ((icnchar >= 49896) && (icnchar <= 50370))
{
return "m";
}
else if ((icnchar >= 50371) && (icnchar <= 50613))
{
return "n";
}
else if ((icnchar >= 50614) && (icnchar <= 50621))
{
return "o";
}
else if ((icnchar >= 50622) && (icnchar <= 50905))
{
return "p";
}
else if ((icnchar >= 50906) && (icnchar <= .51386))
{
return "q";
}
else if ((icnchar >= 51387) && (icnchar <= 51445))
{
return "r";
}
else if ((icnchar >= 51446) && (icnchar <= 52217))
{
return "s";
}
else if ((icnchar >= 52218) && (icnchar <= 52697))
{
return "t";
}
else if ((icnchar >= 52698) && (icnchar <= 52979))
{
return "w";
}
else if ((icnchar >= 52980) && (icnchar <= 53640))
{
return "x";
}
else if ((icnchar >= 53689) && (icnchar <= 54480))
{
return "y";
}
else if ((icnchar >= 54481) && (icnchar <= 55289))
{
return "z";
}
else return ("?");
}