获取字符串首字母

  1 using System;
  2 using System.Collections.Generic;
  3 using System.Text;
  4 
  5 namespace TravelB2B.Core.Utils.Text
  6 {
  7     public class GetInitial
  8     {
  9         #region --获取联系人姓名的首字母
 10       
 11         /// <summary>
 12         /// 获取联系人姓名的首字母
 13         /// </summary>
 14         /// <param name="name">姓名</param>
 15         /// <returns>姓名的首字母</returns>
 16         public static string Get_Name_Frist(string name)
 17         {
 18             try
 19             {
 20                 String _Temp = null;
 21                 for (int i = 0; i < name.Length; i++)
 22                     _Temp = _Temp + GetOneIndex(name.Substring(i, 1));
 23                 return _Temp.Substring(0, 1).ToUpper();
 24             }
 25             catch {
 26                 return "0";
 27             }
 28         }
 29         //得到单个字符的首字母
 30         private static String GetOneIndex(String OneIndexTxt)
 31         {
 32             if (Convert.ToChar(OneIndexTxt) >= 0 && Convert.ToChar(OneIndexTxt) < 256)
 33                 return OneIndexTxt;
 34             else
 35             {
 36                 Encoding gb2312 = Encoding.GetEncoding("gb2312");
 37                 byte[] unicodeBytes = Encoding.Unicode.GetBytes(OneIndexTxt);
 38                 byte[] gb2312Bytes = Encoding.Convert(Encoding.Unicode, gb2312, unicodeBytes);
 39                 return GetX(Convert.ToInt32(
 40              String.Format("{0:D2}", Convert.ToInt16(gb2312Bytes[0]) - 160)
 41              + String.Format("{0:D2}", Convert.ToInt16(gb2312Bytes[1]) - 160)
 42              ));
 43             }
 44 
 45         }
 46 
 47 
 48         //根据区位得到首字母
 49 
 50         private static String GetX(int GBCode)
 51         {
 52             if (GBCode >= 1601 && GBCode < 1637) return "A";
 53             if (GBCode >= 1637 && GBCode < 1833) return "B";
 54             if (GBCode >= 1833 && GBCode < 2078) return "C";
 55             if (GBCode >= 2078 && GBCode < 2274) return "D";
 56             if (GBCode >= 2274 && GBCode < 2302) return "E";
 57             if (GBCode >= 2302 && GBCode < 2433) return "F";
 58             if (GBCode >= 2433 && GBCode < 2594) return "G";
 59             if (GBCode >= 2594 && GBCode < 2787) return "H";
 60             if (GBCode >= 2787 && GBCode < 3106) return "J";
 61             if (GBCode >= 3106 && GBCode < 3212) return "K";
 62             if (GBCode >= 3212 && GBCode < 3472) return "L";
 63             if (GBCode >= 3472 && GBCode < 3635) return "M";
 64             if (GBCode >= 3635 && GBCode < 3722) return "N";
 65             if (GBCode >= 3722 && GBCode < 3730) return "O";
 66             if (GBCode >= 3730 && GBCode < 3858) return "P";
 67             if (GBCode >= 3858 && GBCode < 4027) return "Q";
 68             if (GBCode >= 4027 && GBCode < 4086) return "R";
 69             if (GBCode >= 4086 && GBCode < 4390) return "S";
 70             if (GBCode >= 4390 && GBCode < 4558) return "T";
 71             if (GBCode >= 4558 && GBCode < 4684) return "W";
 72             if (GBCode >= 4684 && GBCode < 4925) return "X";
 73             if (GBCode >= 4925 && GBCode < 5249) return "Y";
 74             if (GBCode >= 5249 && GBCode <= 5589) return "Z";
 75             if (GBCode >= 5601 && GBCode <= 8794)
 76             {
 77                 String CodeData = "cjwgnspgcenegypbtwxzdxykygtpjnmjqmbsgzscyjsyyfpggbzgydywjkgaljswkbjqhyjwpdzlsgmr"
 78                  + "ybywwccgznkydgttngjeyekzydcjnmcylqlypyqbqrpzslwbdgkjfyxjwcltbncxjjjjcxdtqsqzycdxxhgckbphffss"
 79                  + "pybgmxjbbyglbhlssmzmpjhsojnghdzcdklgjhsgqzhxqgkezzwymcscjnyetxadzpmdssmzjjqjyzcjjfwqjbdzbjgd"
 80                  + "nzcbwhgxhqkmwfbpbqdtjjzkqhylcgxfptyjyyzpsjlfchmqshgmmxsxjpkdcmbbqbefsjwhwwgckpylqbgldlcctnma"
 81                  + "eddksjngkcsgxlhzaybdbtsdkdylhgymylcxpycjndqjwxqxfyyfjlejbzrwccqhqcsbzkymgplbmcrqcflnymyqmsqt"
 82                  + "rbcjthztqfrxchxmcjcjlxqgjmshzkbswxemdlckfsydsglycjjssjnqbjctyhbftdcyjdgwyghqfrxwckqkxebpdjpx"
 83                  + "jqsrmebwgjlbjslyysmdxlclqkxlhtjrjjmbjhxhwywcbhtrxxglhjhfbmgykldyxzpplggpmtcbbajjzyljtyanjgbj"
 84                  + "flqgdzyqcaxbkclecjsznslyzhlxlzcghbxzhznytdsbcjkdlzayffydlabbgqszkggldndnyskjshdlxxbcghxyggdj"
 85                  + "mmzngmmccgwzszxsjbznmlzdthcqydbdllscddnlkjyhjsycjlkohqasdhnhcsgaehdaashtcplcpqybsdmpjlpcjaql"
 86                  + "cdhjjasprchngjnlhlyyqyhwzpnccgwwmzffjqqqqxxaclbhkdjxdgmmydjxzllsygxgkjrywzwyclzmcsjzldbndcfc"
 87                  + "xyhlschycjqppqagmnyxpfrkssbjlyxyjjglnscmhcwwmnzjjlhmhchsyppttxrycsxbyhcsmxjsxnbwgpxxtaybgajc"
 88                  + "xlypdccwqocwkccsbnhcpdyznbcyytyckskybsqkkytqqxfcwchcwkelcqbsqyjqcclmthsywhmktlkjlychwheqjhtj"
 89                  + "hppqpqscfymmcmgbmhglgsllysdllljpchmjhwljcyhzjxhdxjlhxrswlwzjcbxmhzqxsdzpmgfcsglsdymjshxpjxom"
 90                  + "yqknmyblrthbcftpmgyxlchlhlzylxgsssscclsldclepbhshxyyfhbmgdfycnjqwlqhjjcywjztejjdhfblqxtqkwhd"
 91                  + "chqxagtlxljxmsljhdzkzjecxjcjnmbbjcsfywkbjzghysdcpqyrsljpclpwxsdwejbjcbcnaytmgmbapclyqbclzxcb"
 92                  + "nmsggfnzjjbzsfqyndxhpcqkzczwalsbccjxpozgwkybsgxfcfcdkhjbstlqfsgdslqwzkxtmhsbgzhjcrglyjbpmljs"
 93                  + "xlcjqqhzmjczydjwbmjklddpmjegxyhylxhlqyqhkycwcjmyhxnatjhyccxzpcqlbzwwwtwbqcmlbmynjcccxbbsnzzl"
 94                  + "jpljxyztzlgcldcklyrzzgqtgjhhgjljaxfgfjzslcfdqzlclgjdjcsnclljpjqdcclcjxmyzftsxgcgsbrzxjqqcczh"
 95                  + "gyjdjqqlzxjyldlbcyamcstylbdjbyregklzdzhldszchznwczcllwjqjjjkdgjcolbbzppglghtgzcygezmycnqcycy"
 96                  + "hbhgxkamtxyxnbskyzzgjzlqjdfcjxdygjqjjpmgwgjjjpkjsbgbmmcjssclpqpdxcdyykypcjddyygywchjrtgcnyql"
 97                  + "dkljczzgzccjgdyksgpzmdlcphnjafyzdjcnmwescsglbtzcgmsdllyxqsxsbljsbbsgghfjlwpmzjnlyywdqshzxtyy"
 98                  + "whmcyhywdbxbtlmswyyfsbjcbdxxlhjhfpsxzqhfzmqcztqcxzxrdkdjhnnyzqqfnqdmmgnydxmjgdhcdycbffallztd"
 99                  + "ltfkmxqzdngeqdbdczjdxbzgsqqddjcmbkxffxmkdmcsychzcmljdjynhprsjmkmpcklgdbqtfzswtfgglyplljzhgjj"
100                  + "gypzltcsmcnbtjbhfkdhbyzgkpbbymtdlsxsbnpdkleycjnycdykzddhqgsdzsctarlltkzlgecllkjljjaqnbdggghf"
101                  + "jtzqjsecshalqfmmgjnlyjbbtmlycxdcjpldlpcqdhsycbzsckbzmsljflhrbjsnbrgjhxpdgdjybzgdlgcsezgxlblg"
102                  + "yxtwmabchecmwyjyzlljjshlgndjlslygkdzpzxjyyzlpcxszfgwyydlyhcljscmbjhblyjlycblydpdqysxktbytdkd"
103                  + "xjypcnrjmfdjgklccjbctbjddbblblcdqrppxjcglzcshltoljnmdddlngkaqakgjgyhheznmshrphqqjchgmfprxcjg"
104                  + "dychghlyrzqlcngjnzsqdkqjymszswlcfqjqxgbggxmdjwlmcrnfkkfsyyljbmqammmycctbshcptxxzzsmphfshmclm"
105                  + "ldjfyqxsdyjdjjzzhqpdszglssjbckbxyqzjsgpsxjzqznqtbdkwxjkhhgflbcsmdldgdzdblzkycqnncsybzbfglzzx"
106                  + "swmsccmqnjqsbdqsjtxxmbldxcclzshzcxrqjgjylxzfjphymzqqydfqjjlcznzjcdgzygcdxmzysctlkphtxhtlbjxj"
107                  + "lxscdqccbbqjfqzfsltjbtkqbsxjjljchczdbzjdczjccprnlqcgpfczlclcxzdmxmphgsgzgszzqjxlwtjpfsyaslcj"
108                  + "btckwcwmytcsjjljcqlwzmalbxyfbpnlschtgjwejjxxglljstgshjqlzfkcgnndszfdeqfhbsaqdgylbxmmygszldyd"
109                  + "jmjjrgbjgkgdhgkblgkbdmbylxwcxyttybkmrjjzxqjbhlmhmjjzmqasldcyxyqdlqcafywyxqhz";
110                 String _gbcode = GBCode.ToString();
111                 int pos = (Convert.ToInt16(_gbcode.Substring(0, 2)) - 56) * 94 + Convert.ToInt16(_gbcode.Substring(_gbcode.Length - 2, 2));
112                 return CodeData.Substring(pos - 1, 1);
113             }
114             return "0";
115         }
116 
117 
118 
119         #endregion
120 
121     }
122 }
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原文地址：https://www.cnblogs.com/hugeboke/p/11575230.html