寻找高手，解决问题

Question

在网上有一个PHP文件，返回的格式是XML，之前我们查询的东西都是在本地查询，现在要用.net去查询网上的PHP文件，且要传参，各位帮帮忙，小弟这里谢过了。

Answer 1

这是采集页面
default.cs
 private System.Net.CookieContainer cookie = new System.Net.CookieContainer();
string data="id=2&title=tcd"; //这里是参数
 string result = HttpHelper.GetHtml("http://www.***.com/b1.php", data, false, cookie);
//result应该就是你想要得到的xml了
HttpHelper.cs
private static Encoding encoding = Encoding.GetEncoding("gb2312");
#region 获取HTML
  /// <summary>
  /// 获取HTML
  /// </summary>
  /// <param name="url">地址</param>
  /// <param name="postData">post 提交的字符串</param>
  /// <param name="isPost">是否是post</param>
  /// <param name="cookieContainer">CookieContainer</param>
  /// <returns>html </returns>
  public static string GetHtml(string url, string postData, bool isPost, CookieContainer cookieContainer)
  {
  if (string.IsNullOrEmpty(postData))
  {
  return GetHtml(url, cookieContainer);
  }  Thread.Sleep(NetworkDelay);//等待  currentTry++;  HttpWebRequest httpWebRequest = null;
  HttpWebResponse httpWebResponse = null;
  try
  {
  byte[] byteRequest = Encoding.Default.GetBytes(postData);  httpWebRequest = (HttpWebRequest)HttpWebRequest.Create(url);
  httpWebRequest.CookieContainer = cookieContainer;
  httpWebRequest.ContentType = contentType;
  httpWebRequest.ServicePoint.ConnectionLimit = maxTry;
  httpWebRequest.Referer = url;
  httpWebRequest.Accept = accept;
  httpWebRequest.UserAgent = userAgent;
  httpWebRequest.Method = isPost ? "POST" : "GET";
  httpWebRequest.ContentLength = byteRequest.Length;  Stream stream = httpWebRequest.GetRequestStream();
  stream.Write(byteRequest, 0, byteRequest.Length);
  stream.Close();  httpWebResponse = (HttpWebResponse)httpWebRequest.GetResponse();
  Stream responseStream = httpWebResponse.GetResponseStream();
  StreamReader streamReader = new StreamReader(responseStream, encoding);
  string html = streamReader.ReadToEnd();
  streamReader.Close();
  responseStream.Close();
  currentTry = 0;  httpWebRequest.Abort();
  httpWebResponse.Close();  return html;
  }
  catch (Exception e)
  {
  //Console.ForegroundColor = ConsoleColor.Red;
  //Console.WriteLine(DateTime.Now.ToString("HH:mm:ss ") + e.Message);
  //Console.ForegroundColor = ConsoleColor.White;  if (currentTry <= maxTry)
  {
  GetHtml(url, postData, isPost, cookieContainer);
  }
  currentTry--;  if (httpWebRequest != null)
  {
  httpWebRequest.Abort();
  } if (httpWebResponse != null)
  {
  httpWebResponse.Close();
  }
  return string.Empty;
  }
  }
  /// <summary>
  /// 获取HTML
  /// </summary>
  /// <param name="url">地址</param>
  /// <param name="cookieContainer">CookieContainer</param>
  /// <returns>HTML</returns>
  public static string GetHtml(string url, CookieContainer cookieContainer)
  {
  Thread.Sleep(NetworkDelay);  currentTry++;
  HttpWebRequest httpWebRequest = null;
  HttpWebResponse httpWebResponse = null;
  try
  {  httpWebRequest = (HttpWebRequest)HttpWebRequest.Create(url);
  httpWebRequest.CookieContainer = cookieContainer;
  httpWebRequest.ContentType = contentType;
  httpWebRequest.ServicePoint.ConnectionLimit = maxTry;
  httpWebRequest.Referer = url;
  httpWebRequest.Accept = accept;
  httpWebRequest.UserAgent = userAgent;
  httpWebRequest.Method = "GET";  httpWebResponse = (HttpWebResponse)httpWebRequest.GetResponse();
  Stream responseStream = httpWebResponse.GetResponseStream();
  StreamReader streamReader = new StreamReader(responseStream, encoding);
  string html = streamReader.ReadToEnd();
  streamReader.Close();
  responseStream.Close();  currentTry--;  httpWebRequest.Abort();
  httpWebResponse.Close();  return html;
  }
  catch (Exception e)
  {
  //Console.ForegroundColor = ConsoleColor.Red;
  //Console.WriteLine(DateTime.Now.ToString("HH:mm:ss ") + e.Message);
  //Console.ForegroundColor = ConsoleColor.White;  if (currentTry <= maxTry)
  {
  GetHtml(url, cookieContainer);
  }  currentTry--;  if (httpWebRequest != null)
  {
  httpWebRequest.Abort();
  } if (httpWebResponse != null)
  {
  httpWebResponse.Close();
  }
  return string.Empty;
  }
  }
  /// <summary>
  /// 获取HTML
  /// </summary>
  /// <param name="url">地址</param>
  /// <returns>HTML</returns>
  public static string GetHtml(string url)
  {
  return GetHtml(url, cc);
  }
  /// <summary>
  /// 获取HTML
  /// </summary>
  /// <param name="url">地址</param>
  /// <param name="postData">提交的字符串</param>
  /// <param name="isPost">是否是POST</param>
  /// <returns>HTML</returns>
  public static string GetHtml(string url, string postData, bool isPost)
  {
  return GetHtml(url, postData, isPost, cc);
  }
  /// <summary>
  /// 获取字符流
  /// </summary>
  /// <param name="url">地址</param>
  /// <param name="cookieContainer">cookieContainer</param>
  /// <returns>Stream</returns>
  public static Stream GetStream(string url, CookieContainer cookieContainer)
  {
  //Thread.Sleep(delay);    currentTry++;
  HttpWebRequest httpWebRequest = null;
  HttpWebResponse httpWebResponse = null;  try
  {  httpWebRequest = (HttpWebRequest)HttpWebRequest.Create(url);
  httpWebRequest.CookieContainer = cookieContainer;
  httpWebRequest.ContentType = contentType;
  httpWebRequest.ServicePoint.ConnectionLimit = maxTry;
  httpWebRequest.Referer = url;
  httpWebRequest.Accept = accept;
  httpWebRequest.UserAgent = userAgent;
  httpWebRequest.Method = "GET";  httpWebResponse = (HttpWebResponse)httpWebRequest.GetResponse();
  Stream responseStream = httpWebResponse.GetResponseStream();
  currentTry--;  //httpWebRequest.Abort();  
  //httpWebResponse.Close();    return responseStream;
  }
  catch (Exception e)
  {
  //Console.ForegroundColor = ConsoleColor.Red;
  //Console.WriteLine(DateTime.Now.ToString("HH:mm:ss ") + e.Message);
  //Console.ForegroundColor = ConsoleColor.White;  if (currentTry <= maxTry)
  {
  GetHtml(url, cookieContainer);
  }  currentTry--;  if (httpWebRequest != null)
  {
  httpWebRequest.Abort();
  } if (httpWebResponse != null)
  {
  httpWebResponse.Close();
  }
  return null;
  }
  }
  #endregion

Answer 2

byte [] postData = Encoding.ASCII.GetBytes(param);//参数 "？"后面的一串字符串
                request = (HttpWebRequest)WebRequest.Create(url);//网络地址
                request.AllowWriteStreamBuffering = true;
                //request.Connection = "KeepAlive";
                //request.KeepAlive
                //request.CookieContainer.Add(Cookies);                stream = request.GetRequestStream();
                stream.Write(postData, 0, postData.Length);
                stream.Close();                response = (HttpWebResponse)request.GetResponse();
                stream = response.GetResponseStream();