URL中文编码

/// <summary>
        /// GB2312编码
        /// </summary>
        /// <param name="str">待编码字符</param>
        /// <returns>编码结果</returns>

  public static string GB2312(string str)
         {
             StringBuilder sb = new StringBuilder();
             //GB2321的编码方式
             byte[] byStr = System.Text.Encoding.GetEncoding ("GB2312").GetBytes(str);
             for (int i = ; i < byStr.Length; i++)
             {
                 //转换为16进制方式 可选2,8,10,16进制
                 sb.Append(@"%" + Convert.ToString(byStr[i], ));
             }
             return (sb.ToString());
         }

/// <summary>
        /// GB2312解码
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>

 public static string DeGB2312(string str)
         {
             byte[] bytes = new byte[str.Split('%').Length ];
             int i=;
             foreach (var item in str.Split('%'))
             {
                 if (item !="")
                 {
                     //转换为16进制的字节
                     bytes[i] = Convert.ToByte(item,);
                     i++;
                 }

             }
             //GB2312的解码
             return Encoding.GetEncoding ("GB2312").GetString(bytes);
         }

/// <summary>
        /// UTF8编码
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>

 public static string EnUTF8(string str)
         {
             StringBuilder sb = new StringBuilder();
             byte[] byStr = System.Text.Encoding.UTF8.GetBytes(str);
             for (int i = ; i < byStr.Length; i++)
             {
                 sb.Append(@"%" + Convert.ToString(byStr[i], ));
             }

             return (sb.ToString());
         }

/// <summary>
        /// UTF8解码
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>

 public static string DeUTF8(string str)
         {
             byte[] bytes = new byte[str.Split('%').Length ];
             int i=;
             foreach (var item in str.Split('%'))
             {
                 if (item !="")
                 {
                     bytes[i] = Convert.ToByte(item,);
                     i++;
                 }

             }
             return Encoding.UTF8.GetString(bytes);
         }

///C# 32位md5
/// <summary>
/// 获得32位的MD5加密
/// </summary>
/// <param name="str">加密字符串</param>
/// <returns>返回值</returns>

 public static string GetMD532(string str)
 {
     MD5 md5 = MD5.Create();
     byte[] d = md5.ComputeHash(Encoding.Default.GetBytes(str));
     return BitConverter.ToString(d).Replace("-", "").ToLower();

 }