C#获取汉子对应的拼音（首字母大写或小写，全拼音含首个字母大写）

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

using System.Text.RegularExpressions;

namespace PinYing
{
  public class PinYingHelper
    {

        /// <summary> 
        /// 汉字转拼音缩写 
        /// </summary> 
        /// <param name="str">要转换的汉字字符串</param> 
        /// <returns>拼音缩写</returns> 
        public static string GetPYString(string str)
        {
            string tempStr = "";
            if (!IsChina(str))
            {
                return str;
            }
            foreach (char c in str)
            {
                if ((int)c >= 33 && (int)c <= 126)
                {//字母和符号原样保留 
                    tempStr += c.ToString();
                }
                else
                {//累加拼音声母 
                    tempStr += GetPYChar(c.ToString());
                }
            }
            return tempStr;
        }

        public static bool IsChina(string CString)
        {
            bool BoolValue = false;
            for (int i = 0; i < CString.Length; i++)
            {
                if (Convert.ToInt32(Convert.ToChar(CString.Substring(i, 1))) < Convert.ToInt32(Convert.ToChar(128)))
                {
                    BoolValue = false;
                }
                else
                {
                    return BoolValue = true;
                }
            }
            return BoolValue;
        }


        /// <summary> 
        /// 取单个字符的拼音声母 
        /// </summary> 
        /// <param name="c">要转换的单个汉字</param> 
        /// <returns>拼音声母</returns> 
        private static string GetPYChar(string c)
        {
            byte[] array = new byte[2];
            array = System.Text.Encoding.Default.GetBytes(c);
            int i = (short)(array[0] - '\0') * 256 + ((short)(array[1] - '\0'));

            if (i < 0xB0A1) return "*";
            if (i < 0xB0C5) return "a";
            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 < 0xCBFA) return "s";
            if (i < 0xCDDA) return "t";
            if (i < 0xCEF4) return "w";
            if (i < 0xD1B9) return "x";
            if (i < 0xD4D1) return "y";
            if (i < 0xD7FA) return "z";

            return "*";
        }





        #region 拼音编码
        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"
        };
        #endregion 拼音编码

        /// <summary>
        /// 把汉字转换成拼音(全拼),如果非汉子,原样输出
        /// </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 GetAllPYLetters(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;
        }




        /// <summary> 
        /// 在指定的字符串列表CnStr中检索符合拼音索引字符串 
        /// </summary> 
        /// <param name="CnStr">汉字字符串</param> 
        /// <returns>相对应的汉语拼音首字母串</returns> 
        public static string GetAllPYFirstLetter(string CnStr)
        {
            string strTemp = "";
            int iLen = CnStr.Length;
            int i = 0;

            for (i = 0; i <= iLen - 1; i++)
            {
                strTemp += GetCharSpellCode(CnStr.Substring(i, 1));
            }

            return strTemp;
        }


        /// <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;
            }

            //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 

            // 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 ("?");
        }







    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Test
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] maxims = new string[]
            {
               "事常与人违，事总在人为",
               "骏马是跑出来的，强兵是打出来的",
               "驾驭命运的舵是奋斗。不抱有一丝幻想，不放弃一点机会，不停止一日努力。 ",
               "如果惧怕前面跌宕的山岩，生命就永远只能是死水一潭",
               "懦弱的人只会裹足不前，莽撞的人只能引为烧身，只有真正勇敢的人才能所向披靡"
            };

            string[] medicines = new string[]
            {
             "(聚维酮碘溶液)",
             "开塞露",
             "炉甘石洗剂",
             "苯扎氯铵贴",
             "鱼石脂软膏",
             "莫匹罗星软膏",
             "红霉素软膏",
             "氢化可的松软膏",
             "曲安奈德软膏",
             "丁苯羟酸乳膏",
             "双氯芬酸二乙胺乳膏",
             "冻疮膏",
             "克霉唑软膏",
             "特比奈芬软膏",
             "酞丁安软膏",
             "咪康唑软膏、栓剂",
             "甲硝唑栓",
             "复方莪术油栓"
            };


            Console.WriteLine("UTF8句子拼音：");
            foreach (string s in medicines)
            {
                Console.WriteLine("汉字：{0}\n拼音：{1}\n", s, PinYin.GetAllPYLetters(s));
            }

            Console.WriteLine("UTF8句子简码：");
            foreach (string s in medicines)
            {
                Console.WriteLine("汉字：{0}\n简码：{1}\n", s, PinYin.GetAllPYFirstLetter(s));
            }

            Console.WriteLine("UTF8句子简码：");
            foreach (string s in medicines)
            {
                Console.WriteLine("汉字：{0}\n简码：{1}\n", s, PinYin.GetPYString(s));
            }

        }



    }
}