.Net常用技巧_汉字转拼音类（除汉字外，其余的原样输出）

注：如果是多音字，则默认取第一个拼音。

using System;
using System.Collections.Generic;
using System.Text;
using Microsoft.International.Converters.PinYinConverter;

namespace MyTool
{
    /// <summary>
    /// 汉字转拼音类
    /// </summary>
    public class PinYinConver
    {
        public PinYinConver()
        {
            //
            // TODO: 在此处添加构造函数逻辑
            //
        }

        #region   自定义方法

        /// <summary>
        /// 将字符串转换成首个拼音
        /// </summary>
        /// <param name="chineseStr">字符串</param>
        /// <returns></returns>
        private static string ConvertToFirstPinYin(string chineseStr)
        {
            if (chineseStr == null)
                return "";

            char[] charArray = chineseStr.ToCharArray();
            StringBuilder sb = new StringBuilder();
            foreach (char c in charArray)
            {
                ChineseChar chineseChar = new ChineseChar(c);
                System.Collections.ObjectModel.ReadOnlyCollection<string> pyColl = chineseChar.Pinyins;
                foreach (string py in pyColl)
                {
                    if (py != null)
                    {
                        sb.Append(py.Substring(0, 1));
                        break;
                    }
                }
            }
            return sb.ToString();
        }

        /// <summary>
        /// 将字符串转换成拼音（如遇多音字取第一个读音）
        /// </summary>
        /// <param name="chineseStr">汉字字符串</param>
        /// <returns></returns>
        private static string ConvertToPinYin(string chineseStr)
        {
            if (chineseStr == null)
                throw new ArgumentNullException("chineseStr");

            char[] charArray = chineseStr.ToCharArray();
            StringBuilder sb = new StringBuilder();
            List<string> listPinyin = new List<string>();
            foreach (char c in charArray)
            {
                ChineseChar chineseChar = new ChineseChar(c);
                System.Collections.ObjectModel.ReadOnlyCollection<string> pyColl = chineseChar.Pinyins;

                if (pyColl[0] == null)
                    continue;
                string strPinyin = pyColl[0].Substring(0, pyColl[0].Length - 1);
                if (!listPinyin.Contains(strPinyin))
                    sb.Append(strPinyin);
                listPinyin.Add(strPinyin);
            }
            return sb.ToString();
        }

        public static bool IsValidChar(char ch)
        {
            return ChineseChar.IsValidChar(ch);
        }
        /// <summary>
        /// 是否为有效的中文字
        /// </summary>
        /// <param name="chn"></param>
        /// <returns></returns>
        public static bool IsValidChinese(string chn)
        {
            if (chn == null)
                return false;

            foreach (char c in chn)
            {
                if (!IsValidChar(c))
                    return false;
            }
            return true;
        }

        #endregion

        /// <summary>
        /// 生成助记码
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        public static string CreateNnemonicCode(string strName)
        {
            string strPin = strName;
            if (string.IsNullOrEmpty(strName) == false)
            {
                string text = strName;
                char[] c = text.ToCharArray();
                string strSum = "";
                for (int i = 0; i < c.Length; i++)
                {
                    //是否是汉字
                    if (c[i] >= 0x4e00 && c[i] <= 0x9fbb)
                    {
                        string strTemp = "";
                        strTemp = c[i].ToString();
                        strTemp = MyTool.PinYinConver.ConvertToFirstPinYin(strTemp);
                        strSum += strTemp.ToUpper();
                    }
                    else if (Char.IsUpper(c[i]) || Char.IsLower(c[i]))
                    {
                        //如果是大小写字母
                        strSum += c[i].ToString().ToUpper();
                    }
                    else if (!Char.IsUpper(c[i]) && !Char.IsLower(c[i]) && !((c[i] >= 0x4e00 && c[i] <= 0x9fbb)))
                    {
                        //其它的原样
                        strSum += c[i].ToString();
                    }
                }

                strPin = strSum;
                //strPin = strSum.ToUpper();
            }
            else
            {
                strPin = "";
            }

            return strPin;
        }

        /// <summary>
        /// 生成拼音编码
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        public static string CreateSpellCode(string strName)
        {
            string strPin = strName;
            if (string.IsNullOrEmpty(strName) == false)
            {
                string text = strName;
                char[] c = text.ToCharArray();
                string strSum = "";
                for (int i = 0; i < c.Length; i++)
                {
                    //是否是汉字
                    if (c[i] >= 0x4e00 && c[i] <= 0x9fbb)
                    {
                        string strTemp = "";
                        strTemp = c[i].ToString();
                        strTemp = MyTool.PinYinConver.ConvertToPinYin(strTemp);
                        strSum += strTemp.ToLower();
                    }
                    else if (Char.IsUpper(c[i]) || Char.IsLower(c[i]))
                    {
                        //如果是大小写字母
                        strSum += c[i].ToString().ToLower();
                    }
                    else if (!Char.IsUpper(c[i]) && !Char.IsLower(c[i]) && !((c[i] >= 0x4e00 && c[i] <= 0x9fbb)))
                    {
                        //其它的原样
                        strSum += c[i].ToString();
                    }
                }

                strPin = strSum;
                //strPin = strSum.ToLower();
            }
            else
            {
                strPin = "";
            }

            return strPin;
        }

    }
}

调用时示例：
注：调用时最好写在KeyUp事件中

private void txtMaterialName_KeyUp(object sender, KeyEventArgs e)
        {

//传入待处理的字符串或文本框内容，生成助记码
            this.txtNnemonicCode.Text = MyTool.PinYinConver.CreateNnemonicCode(this.txtMaterialName.Text);

　　　　//传入待处理的字符串或文本框内容，生成拼音编码
            this.txtSpellCode.Text = MyTool.PinYinConver.CreateSpellCode(this.txtMaterialName.Text);
        }

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