c#汉字转为拼音

using System;
using System.Collections.Generic;
using System.Text;
using System.Text.RegularExpressions;
 
namespace DTcms.Common
{
    public class EnCh
    {
 
        //定义拼音区编码数组
        private static int[] getValue = new int[]
            {
                -,-,-,-,-,-,-,-,-,-,-,-,
                -,-,-,-,-,-,-,-,-,-,-,-,
                -,-,-,-,-,-,-,-,-,-,-,-,
                -,-,-,-,-,-,-,-,-,-,-,-,
                -,-,-,-,-,-,-,-,-,-,-,-,
                -,-,-,-,-,-,-,-,-,-,-,-,
                -,-,-,-,-,-,-,-,-,-,-,-,
                -,-,-,-,-,-,-,-,-,-, -,-,
                -,-,-,-,-,-,-,-,-,-,-,-,
                -,-,-,-,-,-,-,-,-,-,-,-,
                -,-,-,-,-,-,-,-,-,-,-,-,
                -,-,-,-,-,-,-,-,-,-,-,-,
                -,-,-,-,-,-,-,-,-,-,-,-,
                -,-,-,-,-,-,-,-,-,-,-,-,
                -,-,-,-,-,-,-,-,-,-,-,-,
                -,-,-,-,-,-,-,-,-,-,-,-,
                -,-,-,-,-,-,-,-,-,-,-,-,
                -,-,-,-,-,-,-,-,-,-,-,-,
                -,-,-,-,-,-,-,-,-,-,-,-,
                -,-,-,-,-,-,-,-,-,-,-,-,
                -,-,-,-,-,-,-,-,-,-,-,-,
                -,-,-,-,-,-,-,-,-,-,-,-,
                -,-,-,-,-,-,-,-,-,-,-,-,
                -,-,-,-,-,-,-,-,-,-,-,-,
                -,-,-,-,-,-,-,-,-,-,-,-,
                -,-,-,-,-,-,-,-,-,-,-,-,
                -,-,-,-,-,-,-,-,-,-,-,-,
                -,-,-,-,-,-,-,-,-,-,-,-,
                -,-,-,-,-,-,-,-,-,-,-,-,
                -,-,-,-,-,-,-,-,-,-,-,-,
                -,-,-,-,-,-,-,-,-,-,-,-,
                -,-,-,-,-,-,-,-,-,-,-,-,
                -,-,-,-,-,-,-,-,-,-,-,-
            };
        //定义拼音数组
        private static string[] getName = 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"
           };
        //建立一个convertCh方法用于将汉字转换成全拼的拼音，其中，参数代表汉字字符串，此方法的返回值是转换后的拼音字符串
 
        /// <summary>
        /// 汉字转换成全拼的拼音
        /// </summary>
        /// <param name="Chstr">汉字字符串</param>
        /// <returns>转换后的拼音字符串</returns>
 
        public static string convertCh(string Chstr)
        {
            Regex reg = new Regex("^[\u4e00-\u9fa5]$");//验证是否输入汉字
            byte[] arr = new byte[];
            string pystr = "";
            int asc = , M1 = , M2 = ;
            char[] mChar = Chstr.ToCharArray();//获取汉字对应的字符数组
            for (int j = ; j < mChar.Length; j++)
            {
                //如果输入的是汉字
                if (reg.IsMatch(mChar[j].ToString()))
                {
                    arr = System.Text.Encoding.Default.GetBytes(mChar[j].ToString());
                    M1 = (short)(arr[]);
                    M2 = (short)(arr[]);
                    asc = M1 *  + M2 - ;
                    if (asc >  && asc < )
                    {
                        pystr += mChar[j];
                    }
                    else
                    {
                        switch (asc)
                        {
                            case -:
                                pystr += "Zhen"; break;
                            case -:
                                pystr += "Qian"; break;
                            case -:
                                pystr += "Jia"; break;
                            case -:
                                pystr += "Ge"; break;
                            case -:
                                pystr += "Ga"; break;
                            case -:
                                pystr += "La"; break;
                            case -:
                                pystr += "Chen"; break;
                            case -:
                                pystr += "Mao"; break;
                            case -:
                                pystr += "Mao"; break;
                            case -:
                                pystr += "Die"; break;
                            case -:
                                pystr += "Tian"; break;
                            default:
                                for (int i = (getValue.Length - ); i >= ; i--)
                                {
                                    if (getValue[i] <= asc)//判断汉字的拼音区编码是否在指定范围内
                                    {
                                        pystr += getName[i];//如果不超出范围则获取对应的拼音
                                        break;
                                    }
                                }
                                break;
                        }
                    }
                }
                else//如果不是汉字
                {
                    pystr += mChar[j].ToString();//如果不是汉字则返回
                }
            }
            return pystr;//返回获取到的汉字拼音
        }
    }
}