HttpHelper

 /// <summary>
 /// 类说明：HttpHelper类，用来实现Http访问，Post或者Get方式的，直接访问，带Cookie的，带证书的等方式，可以设置代理
 /// 重要提示：请不要自行修改本类，如果因为你自己修改后将无法升级到新版本。如果确实有什么问题请到官方网站提建议，
 /// 我们一定会及时修改
 /// 编码日期：2011-09-20
 /// 编 码 人：苏飞
 /// 联系方式：361983679
 /// 官方网址：http://www.sufeinet.com/thread-3-1-1.html
 /// 修改日期：2015-09-08
 /// 版 本 号：1.5
 /// </summary>
 using System;
 using System.Collections.Generic;
 using System.Text;
 using System.Net;
 using System.IO;
 using System.Text.RegularExpressions;
 using System.IO.Compression;
 using System.Security.Cryptography.X509Certificates;
 using System.Net.Security;

 namespace DotNet.Utilities
 {
     /// <summary>
     /// Http连接操作帮助类
     /// </summary>
     public class HttpHelper
     {

         #region 预定义方变量
         //默认的编码
         private Encoding encoding = Encoding.Default;
         //Post数据编码
         private Encoding postencoding = Encoding.Default;
         //HttpWebRequest对象用来发起请求
         private HttpWebRequest request = null;
         //获取影响流的数据对象
         private HttpWebResponse response = null;
         //设置本地的出口ip和端口
         private IPEndPoint _IPEndPoint = null;
         #endregion

         #region Public

         /// <summary>
         /// 根据相传入的数据，得到相应页面数据
         /// </summary>
         /// <param name="item">参数类对象</param>
         /// <returns>返回HttpResult类型</returns>
         public HttpResult GetHtml(HttpItem item)
         {
             //返回参数
             HttpResult result = new HttpResult();
             try
             {
                 //准备参数
                 SetRequest(item);
             }
             catch (Exception ex)
             {
                 result.Cookie = string.Empty;
                 result.Header = null;
                 result.Html = ex.Message;
                 result.StatusDescription = "配置参数时出错：" + ex.Message;
                 //配置参数时出错
                 return result;
             }
             try
             {
                 //请求数据
                 using (response = (HttpWebResponse)request.GetResponse())
                 {
                     GetData(item, result);
                 }
             }
             catch (WebException ex)
             {
                 if (ex.Response != null)
                 {
                     using (response = (HttpWebResponse)ex.Response)
                     {
                         GetData(item, result);
                     }
                 }
                 else
                 {
                     result.Html = ex.Message;
                 }
             }
             catch (Exception ex)
             {
                 result.Html = ex.Message;
             }
             if (item.IsToLower) result.Html = result.Html.ToLower();
             return result;
         }
         #endregion

         #region GetData

         /// <summary>
         /// 获取数据的并解析的方法
         /// </summary>
         /// <param name="item"></param>
         /// <param name="result"></param>
         private void GetData(HttpItem item, HttpResult result)
         {
             #region base
             //获取StatusCode
             result.StatusCode = response.StatusCode;
             //获取StatusDescription
             result.StatusDescription = response.StatusDescription;
             //获取最后访问的URl
             result.ResponseUri = response.ResponseUri.ToString();
             //获取Headers
             result.Header = response.Headers;
             //获取CookieCollection
             if (response.Cookies != null) result.CookieCollection = response.Cookies;
             //获取set-cookie
             if (response.Headers["set-cookie"] != null) result.Cookie = response.Headers["set-cookie"];
             #endregion

             #region byte
             //处理网页Byte
             byte[] ResponseByte = GetByte();
             #endregion

             #region Html
             )
             {
                 //设置编码
                 SetEncoding(item, result, ResponseByte);
                 //得到返回的HTML
                 result.Html = encoding.GetString(ResponseByte);
             }
             else
             {
                 //没有返回任何Html代码
                 result.Html = string.Empty;
             }
             #endregion
         }
         /// <summary>
         /// 设置编码
         /// </summary>
         /// <param name="item">HttpItem</param>
         /// <param name="result">HttpResult</param>
         /// <param name="ResponseByte">byte[]</param>
         private void SetEncoding(HttpItem item, HttpResult result, byte[] ResponseByte)
         {
             //是否返回Byte类型数据
             if (item.ResultType == ResultType.Byte) result.ResultByte = ResponseByte;
             //从这里开始我们要无视编码了
             if (encoding == null)
             {
                 Match meta = Regex.Match(Encoding.Default.GetString(ResponseByte), "<meta[^<]*charset=([^<]*)[\"']", RegexOptions.IgnoreCase);
                 string c = string.Empty;
                 )
                 {
                     c = meta.Groups[].Value.ToLower().Trim();
                 }
                 )
                 {
                     try
                     {
                         encoding = Encoding.GetEncoding(c.Replace("\"", string.Empty).Replace("'", "").Replace(";", "").Replace("iso-8859-1", "gbk").Trim());
                     }
                     catch
                     {
                         if (string.IsNullOrEmpty(response.CharacterSet))
                         {
                             encoding = Encoding.UTF8;
                         }
                         else
                         {
                             encoding = Encoding.GetEncoding(response.CharacterSet);
                         }
                     }
                 }
                 else
                 {
                     if (string.IsNullOrEmpty(response.CharacterSet))
                     {
                         encoding = Encoding.UTF8;
                     }
                     else
                     {
                         encoding = Encoding.GetEncoding(response.CharacterSet);
                     }
                 }
             }
         }
         /// <summary>
         /// 提取网页Byte
         /// </summary>
         /// <returns></returns>
         private byte[] GetByte()
         {
             byte[] ResponseByte = null;
             MemoryStream _stream = new MemoryStream();

             //GZIIP处理
             if (response.ContentEncoding != null && response.ContentEncoding.Equals("gzip", StringComparison.InvariantCultureIgnoreCase))
             {
                 //开始读取流并设置编码方式
                 _stream = GetMemoryStream(new GZipStream(response.GetResponseStream(), CompressionMode.Decompress));
             }
             else
             {
                 //开始读取流并设置编码方式
                 _stream = GetMemoryStream(response.GetResponseStream());
             }
             //获取Byte
             ResponseByte = _stream.ToArray();
             _stream.Close();
             return ResponseByte;
         }

         /// <summary>
         /// 4.0以下.net版本取数据使用
         /// </summary>
         /// <param name="streamResponse">流</param>
         private MemoryStream GetMemoryStream(Stream streamResponse)
         {
             MemoryStream _stream = new MemoryStream();
             ;
             Byte[] buffer = new Byte[Length];
             , Length);
             )
             {
                 _stream.Write(buffer, , bytesRead);
                 bytesRead = streamResponse.Read(buffer, , Length);
             }
             return _stream;
         }
         #endregion

         #region SetRequest

         /// <summary>
         /// 为请求准备参数
         /// </summary>
         ///<param name="item">参数列表</param>
         private void SetRequest(HttpItem item)
         {
             // 验证证书
             SetCer(item);
             if (item.IPEndPoint != null)
             {
                 _IPEndPoint = item.IPEndPoint;
                 //设置本地的出口ip和端口
                 request.ServicePoint.BindIPEndPointDelegate = new BindIPEndPoint(BindIPEndPointCallback);
             }
             //设置Header参数
             ) foreach (string key in item.Header.AllKeys)
                 {
                     request.Headers.Add(key, item.Header[key]);
                 }
             // 设置代理
             SetProxy(item);
             if (item.ProtocolVersion != null) request.ProtocolVersion = item.ProtocolVersion;
             request.ServicePoint.Expect100Continue = item.Expect100Continue;
             //请求方式Get或者Post
             request.Method = item.Method;
             request.Timeout = item.Timeout;
             request.KeepAlive = item.KeepAlive;
             request.ReadWriteTimeout = item.ReadWriteTimeout;
             if (item.IfModifiedSince != null) request.IfModifiedSince = Convert.ToDateTime(item.IfModifiedSince);
             //Accept
             request.Accept = item.Accept;
             //ContentType返回类型
             request.ContentType = item.ContentType;
             //UserAgent客户端的访问类型，包括浏览器版本和操作系统信息
             request.UserAgent = item.UserAgent;
             // 编码
             encoding = item.Encoding;
             //设置安全凭证
             request.Credentials = item.ICredentials;
             //设置Cookie
             SetCookie(item);
             //来源地址
             request.Referer = item.Referer;
             //是否执行跳转功能
             request.AllowAutoRedirect = item.Allowautoredirect;
             )
             {
                 request.MaximumAutomaticRedirections = item.MaximumAutomaticRedirections;
             }
             //设置Post数据
             SetPostData(item);
             //设置最大连接
             ) request.ServicePoint.ConnectionLimit = item.Connectionlimit;
         }
         /// <summary>
         /// 设置证书
         /// </summary>
         /// <param name="item"></param>
         private void SetCer(HttpItem item)
         {
             if (!string.IsNullOrEmpty(item.CerPath))
             {
                 //这一句一定要写在创建连接的前面。使用回调的方法进行证书验证。
                 ServicePointManager.ServerCertificateValidationCallback = new System.Net.Security.RemoteCertificateValidationCallback(CheckValidationResult);
                 //初始化对像，并设置请求的URL地址
                 request = (HttpWebRequest)WebRequest.Create(item.URL);
                 SetCerList(item);
                 //将证书添加到请求里
                 request.ClientCertificates.Add(new X509Certificate(item.CerPath));
             }
             else
             {
                 //初始化对像，并设置请求的URL地址
                 request = (HttpWebRequest)WebRequest.Create(item.URL);
                 SetCerList(item);
             }
         }
         /// <summary>
         /// 设置多个证书
         /// </summary>
         /// <param name="item"></param>
         private void SetCerList(HttpItem item)
         {
             )
             {
                 foreach (X509Certificate c in item.ClentCertificates)
                 {
                     request.ClientCertificates.Add(c);
                 }
             }
         }
         /// <summary>
         /// 设置Cookie
         /// </summary>
         /// <param name="item">Http参数</param>
         private void SetCookie(HttpItem item)
         {
             if (!string.IsNullOrEmpty(item.Cookie)) request.Headers[HttpRequestHeader.Cookie] = item.Cookie;
             //设置CookieCollection
             if (item.ResultCookieType == ResultCookieType.CookieCollection)
             {
                 request.CookieContainer = new CookieContainer();
                 )
                     request.CookieContainer.Add(item.CookieCollection);
             }
         }
         /// <summary>
         /// 设置Post数据
         /// </summary>
         /// <param name="item">Http参数</param>
         private void SetPostData(HttpItem item)
         {
             //验证在得到结果时是否有传入数据
             if (!request.Method.Trim().ToLower().Contains("get"))
             {
                 if (item.PostEncoding != null)
                 {
                     postencoding = item.PostEncoding;
                 }
                 byte[] buffer = null;
                 //写入Byte类型
                 )
                 {
                     //验证在得到结果时是否有传入数据
                     buffer = item.PostdataByte;
                 }//写入文件
                 else if (item.PostDataType == PostDataType.FilePath && !string.IsNullOrEmpty(item.Postdata))
                 {
                     StreamReader r = new StreamReader(item.Postdata, postencoding);
                     buffer = postencoding.GetBytes(r.ReadToEnd());
                     r.Close();
                 } //写入字符串
                 else if (!string.IsNullOrEmpty(item.Postdata))
                 {
                     buffer = postencoding.GetBytes(item.Postdata);
                 }
                 if (buffer != null)
                 {
                     request.ContentLength = buffer.Length;
                     request.GetRequestStream().Write(buffer, , buffer.Length);
                 }
             }
         }
         /// <summary>
         /// 设置代理
         /// </summary>
         /// <param name="item">参数对象</param>
         private void SetProxy(HttpItem item)
         {
             bool isIeProxy = false;
             if (!string.IsNullOrEmpty(item.ProxyIp))
             {
                 isIeProxy = item.ProxyIp.ToLower().Contains("ieproxy");
             }
             if (!string.IsNullOrEmpty(item.ProxyIp) && !isIeProxy)
             {
                 //设置代理服务器
                 if (item.ProxyIp.Contains(":"))
                 {
                     string[] plist = item.ProxyIp.Split(':');
                     WebProxy myProxy = ].Trim(), Convert.ToInt32(plist[].Trim()));
                     //建议连接
                     myProxy.Credentials = new NetworkCredential(item.ProxyUserName, item.ProxyPwd);
                     //给当前请求对象
                     request.Proxy = myProxy;
                 }
                 else
                 {
                     WebProxy myProxy = new WebProxy(item.ProxyIp, false);
                     //建议连接
                     myProxy.Credentials = new NetworkCredential(item.ProxyUserName, item.ProxyPwd);
                     //给当前请求对象
                     request.Proxy = myProxy;
                 }
             }
             else if (isIeProxy)
             {
                 //设置为IE代理
             }
             else
             {
                 request.Proxy = item.WebProxy;
             }
         }
         #endregion

         #region private main
         /// <summary>
         /// 回调验证证书问题
         /// </summary>
         /// <param name="sender">流对象</param>
         /// <param name="certificate">证书</param>
         /// <param name="chain">X509Chain</param>
         /// <param name="errors">SslPolicyErrors</param>
         /// <returns>bool</returns>
         private bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors) { return true; }

         /// <summary>
         /// 通过设置这个属性，可以在发出连接的时候绑定客户端发出连接所使用的IP地址。
         /// </summary>
         /// <param name="servicePoint"></param>
         /// <param name="remoteEndPoint"></param>
         /// <param name="retryCount"></param>
         /// <returns></returns>
         private IPEndPoint BindIPEndPointCallback(ServicePoint servicePoint, IPEndPoint remoteEndPoint, int retryCount)
         {
             return _IPEndPoint;//端口号
         }
         #endregion
     }
     /// <summary>
     /// Http请求参考类
     /// </summary>
     public class HttpItem
     {
         string _URL = string.Empty;
         /// <summary>
         /// 请求URL必须填写
         /// </summary>
         public string URL
         {
             get { return _URL; }
             set { _URL = value; }
         }
         string _Method = "GET";
         /// <summary>
         /// 请求方式默认为GET方式,当为POST方式时必须设置Postdata的值
         /// </summary>
         public string Method
         {
             get { return _Method; }
             set { _Method = value; }
         }
         ;
         /// <summary>
         /// 默认请求超时时间
         /// </summary>
         public int Timeout
         {
             get { return _Timeout; }
             set { _Timeout = value; }
         }
         ;
         /// <summary>
         /// 默认写入Post数据超时间
         /// </summary>
         public int ReadWriteTimeout
         {
             get { return _ReadWriteTimeout; }
             set { _ReadWriteTimeout = value; }
         }
         Boolean _KeepAlive = true;
         /// <summary>
         ///  获取或设置一个值，该值指示是否与 Internet 资源建立持久性连接默认为true。
         /// </summary>
         public Boolean KeepAlive
         {
             get { return _KeepAlive; }
             set { _KeepAlive = value; }
         }
         string _Accept = "text/html, application/xhtml+xml, */*";
         /// <summary>
         /// 请求标头值 默认为text/html, application/xhtml+xml, */*
         /// </summary>
         public string Accept
         {
             get { return _Accept; }
             set { _Accept = value; }
         }
         string _ContentType = "text/html";
         /// <summary>
         /// 请求返回类型默认 text/html
         /// </summary>
         public string ContentType
         {
             get { return _ContentType; }
             set { _ContentType = value; }
         }
         string _UserAgent = "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)";
         /// <summary>
         /// 客户端访问信息默认Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)
         /// </summary>
         public string UserAgent
         {
             get { return _UserAgent; }
             set { _UserAgent = value; }
         }
         Encoding _Encoding = null;
         /// <summary>
         /// 返回数据编码默认为NUll,可以自动识别,一般为utf-8,gbk,gb2312
         /// </summary>
         public Encoding Encoding
         {
             get { return _Encoding; }
             set { _Encoding = value; }
         }
         private PostDataType _PostDataType = PostDataType.String;
         /// <summary>
         /// Post的数据类型
         /// </summary>
         public PostDataType PostDataType
         {
             get { return _PostDataType; }
             set { _PostDataType = value; }
         }
         string _Postdata = string.Empty;
         /// <summary>
         /// Post请求时要发送的字符串Post数据
         /// </summary>
         public string Postdata
         {
             get { return _Postdata; }
             set { _Postdata = value; }
         }
         private byte[] _PostdataByte = null;
         /// <summary>
         /// Post请求时要发送的Byte类型的Post数据
         /// </summary>
         public byte[] PostdataByte
         {
             get { return _PostdataByte; }
             set { _PostdataByte = value; }
         }
         private WebProxy _WebProxy;
         /// <summary>
         /// 设置代理对象，不想使用IE默认配置就设置为Null，而且不要设置ProxyIp
         /// </summary>
         public WebProxy WebProxy
         {
             get { return _WebProxy; }
             set { _WebProxy = value; }
         }

         CookieCollection cookiecollection = null;
         /// <summary>
         /// Cookie对象集合
         /// </summary>
         public CookieCollection CookieCollection
         {
             get { return cookiecollection; }
             set { cookiecollection = value; }
         }
         string _Cookie = string.Empty;
         /// <summary>
         /// 请求时的Cookie
         /// </summary>
         public string Cookie
         {
             get { return _Cookie; }
             set { _Cookie = value; }
         }
         string _Referer = string.Empty;
         /// <summary>
         /// 来源地址，上次访问地址
         /// </summary>
         public string Referer
         {
             get { return _Referer; }
             set { _Referer = value; }
         }
         string _CerPath = string.Empty;
         /// <summary>
         /// 证书绝对路径
         /// </summary>
         public string CerPath
         {
             get { return _CerPath; }
             set { _CerPath = value; }
         }
         private Boolean isToLower = false;
         /// <summary>
         /// 是否设置为全文小写，默认为不转化
         /// </summary>
         public Boolean IsToLower
         {
             get { return isToLower; }
             set { isToLower = value; }
         }
         private Boolean allowautoredirect = false;
         /// <summary>
         /// 支持跳转页面，查询结果将是跳转后的页面，默认是不跳转
         /// </summary>
         public Boolean Allowautoredirect
         {
             get { return allowautoredirect; }
             set { allowautoredirect = value; }
         }
         ;
         /// <summary>
         /// 最大连接数
         /// </summary>
         public int Connectionlimit
         {
             get { return connectionlimit; }
             set { connectionlimit = value; }
         }
         private string proxyusername = string.Empty;
         /// <summary>
         /// 代理Proxy 服务器用户名
         /// </summary>
         public string ProxyUserName
         {
             get { return proxyusername; }
             set { proxyusername = value; }
         }
         private string proxypwd = string.Empty;
         /// <summary>
         /// 代理 服务器密码
         /// </summary>
         public string ProxyPwd
         {
             get { return proxypwd; }
             set { proxypwd = value; }
         }
         private string proxyip = string.Empty;
         /// <summary>
         /// 代理 服务IP ,如果要使用IE代理就设置为ieproxy
         /// </summary>
         public string ProxyIp
         {
             get { return proxyip; }
             set { proxyip = value; }
         }
         private ResultType resulttype = ResultType.String;
         /// <summary>
         /// 设置返回类型String和Byte
         /// </summary>
         public ResultType ResultType
         {
             get { return resulttype; }
             set { resulttype = value; }
         }
         private WebHeaderCollection header = new WebHeaderCollection();
         /// <summary>
         /// header对象
         /// </summary>
         public WebHeaderCollection Header
         {
             get { return header; }
             set { header = value; }
         }

         private Version _ProtocolVersion;

         /// <summary>
         //     获取或设置用于请求的 HTTP 版本。返回结果:用于请求的 HTTP 版本。默认为 System.Net.HttpVersion.Version11。
         /// </summary>
         public Version ProtocolVersion
         {
             get { return _ProtocolVersion; }
             set { _ProtocolVersion = value; }
         }
         private Boolean _expect100continue = true;
         /// <summary>
         ///  获取或设置一个 System.Boolean 值，该值确定是否使用 100-Continue 行为。如果 POST 请求需要 100-Continue 响应，则为 true；否则为 false。默认值为 true。
         /// </summary>
         public Boolean Expect100Continue
         {
             get { return _expect100continue; }
             set { _expect100continue = value; }
         }
         private X509CertificateCollection _ClentCertificates;
         /// <summary>
         /// 设置509证书集合
         /// </summary>
         public X509CertificateCollection ClentCertificates
         {
             get { return _ClentCertificates; }
             set { _ClentCertificates = value; }
         }
         private Encoding _PostEncoding;
         /// <summary>
         /// 设置或获取Post参数编码,默认的为Default编码
         /// </summary>
         public Encoding PostEncoding
         {
             get { return _PostEncoding; }
             set { _PostEncoding = value; }
         }
         private ResultCookieType _ResultCookieType = ResultCookieType.String;
         /// <summary>
         /// Cookie返回类型,默认的是只返回字符串类型
         /// </summary>
         public ResultCookieType ResultCookieType
         {
             get { return _ResultCookieType; }
             set { _ResultCookieType = value; }
         }

         private ICredentials _ICredentials = CredentialCache.DefaultCredentials;
         /// <summary>
         /// 获取或设置请求的身份验证信息。
         /// </summary>
         public ICredentials ICredentials
         {
             get { return _ICredentials; }
             set { _ICredentials = value; }
         }
         /// <summary>
         /// 设置请求将跟随的重定向的最大数目
         /// </summary>
         private int _MaximumAutomaticRedirections;

         public int MaximumAutomaticRedirections
         {
             get { return _MaximumAutomaticRedirections; }
             set { _MaximumAutomaticRedirections = value; }
         }

         private DateTime? _IfModifiedSince = null;
         /// <summary>
         /// 获取和设置IfModifiedSince，默认为当前日期和时间
         /// </summary>
         public DateTime? IfModifiedSince
         {
             get { return _IfModifiedSince; }
             set { _IfModifiedSince = value; }
         }
         #region ip-port
         private IPEndPoint _IPEndPoint = null;
         /// <summary>
         /// 设置本地的出口ip和端口
         /// </summary>]
         /// <example>
         ///item.IPEndPoint = new IPEndPoint(IPAddress.Parse("192.168.1.1"),80);
         /// </example>
         public IPEndPoint IPEndPoint
         {
             get { return _IPEndPoint; }
             set { _IPEndPoint = value; }
         }
         #endregion
     }
     /// <summary>
     /// Http返回参数类
     /// </summary>
     public class HttpResult
     {
         private string _Cookie;
         /// <summary>
         /// Http请求返回的Cookie
         /// </summary>
         public string Cookie
         {
             get { return _Cookie; }
             set { _Cookie = value; }
         }

         private CookieCollection _CookieCollection;
         /// <summary>
         /// Cookie对象集合
         /// </summary>
         public CookieCollection CookieCollection
         {
             get { return _CookieCollection; }
             set { _CookieCollection = value; }
         }
         private string _html = string.Empty;
         /// <summary>
         /// 返回的String类型数据 只有ResultType.String时才返回数据，其它情况为空
         /// </summary>
         public string Html
         {
             get { return _html; }
             set { _html = value; }
         }
         private byte[] _ResultByte;
         /// <summary>
         /// 返回的Byte数组 只有ResultType.Byte时才返回数据，其它情况为空
         /// </summary>
         public byte[] ResultByte
         {
             get { return _ResultByte; }
             set { _ResultByte = value; }
         }
         private WebHeaderCollection _Header;
         /// <summary>
         /// header对象
         /// </summary>
         public WebHeaderCollection Header
         {
             get { return _Header; }
             set { _Header = value; }
         }
         private string _StatusDescription;
         /// <summary>
         /// 返回状态说明
         /// </summary>
         public string StatusDescription
         {
             get { return _StatusDescription; }
             set { _StatusDescription = value; }
         }
         private HttpStatusCode _StatusCode;
         /// <summary>
         /// 返回状态码,默认为OK
         /// </summary>
         public HttpStatusCode StatusCode
         {
             get { return _StatusCode; }
             set { _StatusCode = value; }
         }
         /// <summary>
         /// 最后访问的URl
         /// </summary>
         public string ResponseUri { get; set; }
         /// <summary>
         /// 获取重定向的URl
         /// </summary>
         public string RedirectUrl
         {
             get
             {
                 try
                 {
                     )
                     {
                         if (Header["location"]!=null)
                         {
                             string locationurl = Header["location"].ToString().ToLower();

                             if (!string.IsNullOrEmpty(locationurl))
                             {
                                 bool b = locationurl.StartsWith("http://") || locationurl.StartsWith("https://");
                                 if (!b)
                                 {
                                     locationurl = new Uri(new Uri(ResponseUri), locationurl).AbsoluteUri;
                                 }
                             }
                             return locationurl;
                         }
                     }
                 }
                 catch { }
                 return string.Empty;
             }
         }
     }
     /// <summary>
     /// 返回类型
     /// </summary>
     public enum ResultType
     {
         /// <summary>
         /// 表示只返回字符串 只有Html有数据
         /// </summary>
         String,
         /// <summary>
         /// 表示返回字符串和字节流 ResultByte和Html都有数据返回
         /// </summary>
         Byte
     }
     /// <summary>
     /// Post的数据格式默认为string
     /// </summary>
     public enum PostDataType
     {
         /// <summary>
         /// 字符串类型，这时编码Encoding可不设置
         /// </summary>
         String,
         /// <summary>
         /// Byte类型，需要设置PostdataByte参数的值编码Encoding可设置为空
         /// </summary>
         Byte,
         /// <summary>
         /// 传文件，Postdata必须设置为文件的绝对路径，必须设置Encoding的值
         /// </summary>
         FilePath
     }
     /// <summary>
     /// Cookie返回类型
     /// </summary>
     public enum ResultCookieType
     {
         /// <summary>
         /// 只返回字符串类型的Cookie
         /// </summary>
         String,
         /// <summary>
         /// CookieCollection格式的Cookie集合同时也返回String类型的cookie
         /// </summary>
         CookieCollection
     }
 }