1 使用指定编码格式发送一个POST请求，并通过约定的编码格式获取返回的数据  2  3 Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> 4     /// <summary> 5     /// 使用指定编码格式发送一个POST请求，并通过约定的编码格式获取返回的数据 6     /// </summary> 7     /// <param name="url">请求的url地址</param> 8     /// <param name="parameters">请求的参数集合</param> 9     /// <param name="reqencode">请求的编码格式</param>10     /// <param name="resencode">接收的编码格式</param>11     /// <returns></returns>12     public static string SendPostRequest(string url, NameValueCollection parameters, Encoding reqencode, Encoding resencode)13     {14         HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);15         req.Method = "post";16         req.ContentType = "application/x-www-form-urlencoded";17 18         StringBuilder parassb = new StringBuilder();19         foreach (string key in parameters.Keys)20         {21             if (parassb.Length > 0)22                 parassb.Append("&");23             parassb.AppendFormat("{0}={1}", key, parameters[key]);24         }25         byte[] data =http://www.mamicode.com/ reqencode.GetBytes(parassb.ToString());26         Stream reqstream = req.GetRequestStream();27         reqstream.Write(data, 0, data.Length);28         reqstream.Close();29         string result = String.Empty;30         using (StreamReader reader = new StreamReader(req.GetResponse().GetResponseStream(), resencode))31         {32             result = reader.ReadToEnd();33         }34         return result;35     }

 1 HttpWebRequest 发送一个GET请求  2  3 Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> 4  5     /* 6      * 需要引用如下namespace 7      * using System.Reflection; 8      * using System.Text; 9      * using System.Net;10      * using System.IO;11      */12 13     /// <summary>14     /// HttpWebRequest 发送一个GET请求15     /// </summary>16     /// <param name="url">请求的url地址</param>17     /// <param name="parameters">请求的参数集合</param>18     /// <param name="reqencode">请求的编码格式</param>19     /// <param name="resencode">接收的编码格式</param>20     /// <returns></returns>21     public static string SendGetRequest(string baseurl, NameValueCollection parameters, Encoding reqencode, Encoding resencode)22     {23         StringBuilder parassb = new StringBuilder();24         foreach (string key in parameters.Keys)25         {26             if (parassb.Length > 0)27                 parassb.Append("&");28             parassb.AppendFormat("{0}={1}", HttpUtility.UrlEncode(key, reqencode), HttpUtility.UrlEncode(parameters[key], reqencode));29         }30 31         if (parassb.Length > 0)32         {33             baseurl += "?" + parassb;34         }35         HttpWebRequest req = (HttpWebRequest)WebRequest.Create(baseurl);36         req.Method = "GET";37         req.MaximumAutomaticRedirections = 3;38         req.Timeout = 5000;39 40         string result = String.Empty;41         using (StreamReader reader = new StreamReader(req.GetResponse().GetResponseStream(), resencode))42         {43             result = reader.ReadToEnd();44         }45         return result;46     }

 1 Post请求并且重定向  2  3 Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> 4     /// <summary> 5     /// Post请求并且重定向 6     /// </summary> 7     /// <param name="url"></param> 8     /// <param name="parameters"></param> 9     /// <param name="context"></param>10     public static void PostAndRedirect(string url, NameValueCollection parameters, HttpContext context)11     {12         StringBuilder script = new StringBuilder();13         script.AppendFormat("<form name=redirpostform action=‘{0}‘ method=‘post‘>", url);14         foreach (string key in parameters.Keys)15         {16             script.AppendFormat("<input type=‘hidden‘ name=‘{0}‘ value=http://www.mamicode.com/‘{1}‘>",17                 key, parameters[key]);18         }19         script.Append("</form>");20         script.Append("<script language=‘javascript‘>redirpostform.submit();</script>");21         context.Response.Write(script);22         context.Response.End();23     }