获取字符串中的汉字拼音首字母（根据http://blog.csdn.net/iwebsms/archive/00/09/8/98.aspx修改）


可能代码比较臃肿，希望有朋友再帮忙改正


//返回给定字符串的首字母
private String IndexCode(String IndexTxt)
{
String _Temp=null;
for(int i=0;i<IndexTxt.Length;i++)
_Temp = _Temp + GetOneIndex( IndexTxt.Substring(i,) );
return _Temp;
}


//得到单个字符的首字母
private String GetOneIndex(String OneIndexTxt)
{
if(Convert.ToChar(OneIndexTxt)>=0 && Convert.ToChar(OneIndexTxt)<6)
return OneIndexTxt;
else
{
Encoding gb = Encoding.GetEncoding("gb");
byte[] unicodeBytes = Encoding.Unicode.GetBytes(OneIndexTxt);
byte[] gbBytes = Encoding.Convert(Encoding.Unicode, gb, unicodeBytes);
return GetX(Convert.ToInt(
String.Format("{0:D}",Convert.ToInt6(gbBytes[0])-60)
+ String.Format("{0:D}",Convert.ToInt6(gbBytes[])-60)
));
}

}


//根据区位得到首字母
private String GetX(int GBCode)
{
if(GBCode >= 60 && GBCode < 67)return "A";
if(GBCode >= 67 && GBCode < 8)return "B";
if(GBCode >= 8 && GBCode < 078)return "C";
if(GBCode >= 078 && GBCode < 7)return "D";
if(GBCode >= 7 && GBCode < 0)return "E";
if(GBCode >= 0 && GBCode < )return "F";
if(GBCode >= && GBCode < 9)return "G";
if(GBCode >= 9 && GBCode < 787)return "H";
if(GBCode >= 787 && GBCode < 06)return "J";
if(GBCode >= 06 && GBCode < )return "K";
if(GBCode >= && GBCode < 7)return "L";
if(GBCode >= 7 && GBCode < 6)return "M";
if(GBCode >= 6 && GBCode < 7)return "N";
if(GBCode >= 7 && GBCode < 70)return "O";
if(GBCode >= 70 && GBCode < 88)return "P";
if(GBCode >= 88 && GBCode < 07)return "Q";
if(GBCode >= 07 && GBCode < 086)return "R";
if(GBCode >= 086 && GBCode < 90)return "S";
if(GBCode >= 90 && GBCode < 8)return "T";
if(GBCode >= 8 && GBCode < 68)return "W";
if(GBCode >= 68 && GBCode < 9)return "X";
if(GBCode >= 9 && GBCode < 9)return "Y";
if(GBCode >= 9 && GBCode <= 89)return "Z";
if(GBCode >= 60 && GBCode <= 879)
{
String CodeData = "cjwgnspgcenegypbtwxzdxykygtpjnmjqmbsgzscyjsyyfpggbzgydywjkgaljswkbjqhyjwpdzlsgmr"
+ "ybywwccgznkydgttngjeyekzydcjnmcylqlypyqbqrpzslwbdgkjfyxjwcltbncxjjjjcxdtqsqzycdxxhgckbphffss"
+ "pybgmxjbbyglbhlssmzmpjhsojnghdzcdklgjhsgqzhxqgkezzwymcscjnyetxadzpmdssmzjjqjyzcjjfwqjbdzbjgd"
+ "nzcbwhgxhqkmwfbpbqdtjjzkqhylcgxfptyjyyzpsjlfchmqshgmmxsxjpkdcmbbqbefsjwhwwgckpylqbgldlcctnma"
+ "eddksjngkcsgxlhzaybdbtsdkdylhgymylcxpycjndqjwxqxfyyfjlejbzrwccqhqcsbzkymgplbmcrqcflnymyqmsqt"
+ "rbcjthztqfrxchxmcjcjlxqgjmshzkbswxemdlckfsydsglycjjssjnqbjctyhbftdcyjdgwyghqfrxwckqkxebpdjpx"
+ "jqsrmebwgjlbjslyysmdxlclqkxlhtjrjjmbjhxhwywcbhtrxxglhjhfbmgykldyxzpplggpmtcbbajjzyljtyanjgbj"
+ "flqgdzyqcaxbkclecjsznslyzhlxlzcghbxzhznytdsbcjkdlzayffydlabbgqszkggldndnyskjshdlxxbcghxyggdj"
+ "mmzngmmccgwzszxsjbznmlzdthcqydbdllscddnlkjyhjsycjlkohqasdhnhcsgaehdaashtcplcpqybsdmpjlpcjaql"
+ "cdhjjasprchngjnlhlyyqyhwzpnccgwwmzffjqqqqxxaclbhkdjxdgmmydjxzllsygxgkjrywzwyclzmcsjzldbndcfc"
+ "xyhlschycjqppqagmnyxpfrkssbjlyxyjjglnscmhcwwmnzjjlhmhchsyppttxrycsxbyhcsmxjsxnbwgpxxtaybgajc"
+ "xlypdccwqocwkccsbnhcpdyznbcyytyckskybsqkkytqqxfcwchcwkelcqbsqyjqcclmthsywhmktlkjlychwheqjhtj"
+ "hppqpqscfymmcmgbmhglgsllysdllljpchmjhwljcyhzjxhdxjlhxrswlwzjcbxmhzqxsdzpmgfcsglsdymjshxpjxom"
+ "yqknmyblrthbcftpmgyxlchlhlzylxgsssscclsldclepbhshxyyfhbmgdfycnjqwlqhjjcywjztejjdhfblqxtqkwhd"
+ "chqxagtlxljxmsljhdzkzjecxjcjnmbbjcsfywkbjzghysdcpqyrsljpclpwxsdwejbjcbcnaytmgmbapclyqbclzxcb"
+ "nmsggfnzjjbzsfqyndxhpcqkzczwalsbccjxpozgwkybsgxfcfcdkhjbstlqfsgdslqwzkxtmhsbgzhjcrglyjbpmljs"
+ "xlcjqqhzmjczydjwbmjklddpmjegxyhylxhlqyqhkycwcjmyhxnatjhyccxzpcqlbzwwwtwbqcmlbmynjcccxbbsnzzl"
+ "jpljxyztzlgcldcklyrzzgqtgjhhgjljaxfgfjzslcfdqzlclgjdjcsnclljpjqdcclcjxmyzftsxgcgsbrzxjqqcczh"
+ "gyjdjqqlzxjyldlbcyamcstylbdjbyregklzdzhldszchznwczcllwjqjjjkdgjcolbbzppglghtgzcygezmycnqcycy"
+ "hbhgxkamtxyxnbskyzzgjzlqjdfcjxdygjqjjpmgwgjjjpkjsbgbmmcjssclpqpdxcdyykypcjddyygywchjrtgcnyql"
+ "dkljczzgzccjgdyksgpzmdlcphnjafyzdjcnmwescsglbtzcgmsdllyxqsxsbljsbbsgghfjlwpmzjnlyywdqshzxtyy"
+ "whmcyhywdbxbtlmswyyfsbjcbdxxlhjhfpsxzqhfzmqcztqcxzxrdkdjhnnyzqqfnqdmmgnydxmjgdhcdycbffallztd"
+ "ltfkmxqzdngeqdbdczjdxbzgsqqddjcmbkxffxmkdmcsychzcmljdjynhprsjmkmpcklgdbqtfzswtfgglyplljzhgjj"
+ "gypzltcsmcnbtjbhfkdhbyzgkpbbymtdlsxsbnpdkleycjnycdykzddhqgsdzsctarlltkzlgecllkjljjaqnbdggghf"
+ "jtzqjsecshalqfmmgjnlyjbbtmlycxdcjpldlpcqdhsycbzsckbzmsljflhrbjsnbrgjhxpdgdjybzgdlgcsezgxlblg"
+ "yxtwmabchecmwyjyzlljjshlgndjlslygkdzpzxjyyzlpcxszfgwyydlyhcljscmbjhblyjlycblydpdqysxktbytdkd"
+ "xjypcnrjmfdjgklccjbctbjddbblblcdqrppxjcglzcshltoljnmdddlngkaqakgjgyhheznmshrphqqjchgmfprxcjg"
+ "dychghlyrzqlcngjnzsqdkqjymszswlcfqjqxgbggxmdjwlmcrnfkkfsyyljbmqammmycctbshcptxxzzsmphfshmclm"
+ "ldjfyqxsdyjdjjzzhqpdszglssjbckbxyqzjsgpsxjzqznqtbdkwxjkhhgflbcsmdldgdzdblzkycqnncsybzbfglzzx"
+ "swmsccmqnjqsbdqsjtxxmbldxcclzshzcxrqjgjylxzfjphymzqqydfqjjlcznzjcdgzygcdxmzysctlkphtxhtlbjxj"
+ "lxscdqccbbqjfqzfsltjbtkqbsxjjljchczdbzjdczjccprnlqcgpfczlclcxzdmxmphgsgzgszzqjxlwtjpfsyaslcj"
+ "btckwcwmytcsjjljcqlwzmalbxyfbpnlschtgjwejjxxglljstgshjqlzfkcgnndszfdeqfhbsaqdgylbxmmygszldyd"
+ "jmjjrgbjgkgdhgkblgkbdmbylxwcxyttybkmrjjzxqjbhlmhmjjzmqasldcyxyqdlqcafywyxqhz";
String _gbcode = GBCode.ToString();
int pos = (Convert.ToInt6(_gbcode.Substring(0,))-6)*9+Convert.ToInt6(_gbcode.Substring(_gbcode.Length-,));
return CodeData.Substring(pos-,);
}
return " ";
}