编码与解码的小例子

  #region 解码
        private string NormalU2C(string input)
        {
            string str = "";
            char[] chArray = input.ToCharArray();
            Encoding bigEndianUnicode = Encoding.UTF8;
            for (int i = 0; i < chArray.Length; i++)
            {
                char ch = chArray[i];
                if (ch.Equals('\\'))
                {
                    i++;
                    i++;
                    char[] chArray2 = new char[4];
                    int index = 0;
                    index = 0;
                    while ((index < 4) && (i < chArray.Length))
                    {
                        chArray2[index] = chArray[i];
                        index++;
                        i++;
                    }
                    if (index == 4)
                    {
                        try
                        {
                            str = str + this.UnicodeCode2Str(chArray2);
                        }
                        catch (Exception)
                        {
                            str = str + @"/";

                            for (int j = 0; j < index; j++)
                            {
                                str = str + chArray2[j];
                            }
                        }
                        i--;
                    }
                    else
                    {
                        str = str + @"/";

                        for (int k = 0; k < index; k++)
                        {
                            str = str + chArray2[k];
                        }
                    }
                }
                else
                {
                    str = str + ch.ToString();
                }
            }
            return str;
        }
        private string UnicodeCode2Str(char[] u4)
        {
            if (u4.Length < 4)
            {
                throw new Exception("It's not a unicode code array");
            }
            string str = "0123456789ABCDEF";
            char ch = char.ToUpper(u4[0]);
            char ch2 = char.ToUpper(u4[1]);
            char ch3 = char.ToUpper(u4[2]);
            char ch4 = char.ToUpper(u4[3]);
            int index = str.IndexOf(ch);
            int num2 = str.IndexOf(ch2);
            int num3 = str.IndexOf(ch3);
            int num4 = str.IndexOf(ch4);
            if (((index == -1) || (num2 == -1)) || ((num3 == -1) || (num4 == -1)))
            {
                throw new Exception("It's not a unicode code array");
            }
            byte num5 = (byte)(((index * 0x10) + num2) & 0xff);
            byte num6 = (byte)(((num3 * 0x10) + num4) & 0xff);
            byte[] bytes = new byte[] { num5, num6 };
            return Encoding.BigEndianUnicode.GetString(bytes);
        }
        #endregion

 简单调用：

item.Title = "\\u5206\\u949f\\u524d";

item.Title = NormalU2C(item.Title);