using System;

 /// <summary>

 /// UTF8字符串转换为汉字用的类

 /// 转换如"\\u8d35"之类的字符串为对应的汉字

 /// </summary>

 class UTF8String

 {

     string m_strContent = "";

     /// <summary>

     /// 构造函数

     /// </summary>

     /// <param name="content">要转换的字符串</param>

     public UTF8String(string content)

     {

         m_strContent = content;

     }

     public string getContent()

     {

         return m_strContent;

     }

     /// <summary>

     /// 转换函数

     /// </summary>

     /// <returns>返回转换好的字符串</returns>

     public string ToString()

     {

         string reString = null;

         char[] content = m_strContent.ToCharArray(); //把字符串变为字符数组，以进行处理

         for (int i = ; i < content.Length; i++) //遍历所有字符

         {

             if (content[i] == '\\') //判断是否转义字符 \

             {

                 switch (content[i + ]) //判断转义字符的下一个字符是什么

                 {

                     case 'u': //转换的是汉字

                     case 'U':

                         reString += HexArrayToChar(content, i + ); //获取对应的汉字

                         i = i + ;

                         break;

                     case '/': //转换的是 /

                     case '\\': //转换的是 \

                     case '"':

                         break;

                     default: //其它

                         reString += EscapeCharacter(content[i + ]); //转为其它类型字符

                         i = i + ;

                         break;

                 }

             }

             else

                 reString += content[i]; //非转义字符则直接加入

         }

         return reString;

     }

     /// <summary>

     /// 字符数组转对应汉字字符

     /// </summary>

     /// <param name="content">要转换的数字</param>

     /// <param name="startIndex">起始位置</param>

     /// <returns>对应的汉字</returns>

     private char HexArrayToChar(char[] content, int startIndex)

     {

         char[] ac = new char[];

         for (int i = ; i < ; i++) //获取要转换的部分

             ac[i] = content[startIndex + i];

         string num = new string(ac); //字符数组转为字符串

         return HexStringToChar(num);

     }

     /// <summary>

     /// 转义字符转换函数

     /// 转换字符为对应的转义字符

     /// </summary>

     /// <param name="c">要转的字符</param>

     /// <returns>对应的转义字符</returns>

     private char EscapeCharacter(char c)

     {

         char rc;

         switch (c)

         {

             case 't':

                 c = '\t';

                 break;

             case 'n':

                 c = '\n';

                 break;

             case 'r':

                 c = '\r';

                 break;

             case '\'':

                 c = '\'';

                 break;

             case '':

                 c = '\0';

                 break;

         }

         return c;

     }

     /// <summary>

     /// 字符串转对应汉字字符

     /// 只能处理如"8d34"之类的数字字符为对应的汉字

     /// 例子："9648" 转为 '陈'

     /// </summary>

     /// <param name="content">转换的字符串</param>

     /// <returns>对应的汉字</returns>

     public static char HexStringToChar(string content)

     {

         int num = Convert.ToInt32(content, );

         return (char)num;

     }

     /// <summary>

     /// 把string转为UTF8String类型

     /// </summary>

     /// <param name="content"></param>

     /// <returns></returns>

     public static UTF8String ValueOf(string content)

     {

         string reString = null;

         char[] ac = content.ToCharArray();

         int num;

         foreach (char c in ac)

         {

             num = (int)c;

             string n = num.ToString("X2");

             if (n.Length == )

                 reString += "\\u" + n;

             else

                 reString += c;

         }

         return new UTF8String(reString);

     }

 }