C#利用HttpWebRequest进行post请求的示例（HTTPS）

using System;  

using System.Collections.Generic;  

using System.Linq;  

using System.Text;  

using System.Net.Security;  

using System.Security.Cryptography.X509Certificates;  

using System.Net;  

using System.IO;  

using System.IO.Compression;  

using System.Text.RegularExpressions;     

  

namespace HttpWebRequestDemo  

{  

    class Program  

    {  

        private static readonly string DefaultUserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)";  

  

        private static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)  

        {  

            return true; //总是接受     

        }  

  

        public static HttpWebResponse CreatePostHttpResponse(string url, IDictionary<string, string> parameters,Encoding charset)  

        {  

            HttpWebRequest request = null;  

            //HTTPSQ请求  

            ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);  

            request = WebRequest.Create(url) as HttpWebRequest;  

            request.ProtocolVersion = HttpVersion.Version10;  

            request.Method = "POST";  

            request.ContentType = "application/x-www-form-urlencoded";  

            request.UserAgent = DefaultUserAgent;  

            //如果需要POST数据     

            if (!(parameters == null || parameters.Count == 0))  

            {  

                StringBuilder buffer = new StringBuilder();  

                int i = 0;  

                foreach (string key in parameters.Keys)  

                {  

                    if (i > 0)  

                    {  

                        buffer.AppendFormat("&{0}={1}", key, parameters[key]);  

                    }  

                    else  

                    {  

                        buffer.AppendFormat("{0}={1}", key, parameters[key]);  

                    }  

                    i++;  

                }  

                byte[] data = charset.GetBytes(buffer.ToString());  

                using (Stream stream = request.GetRequestStream())  

                {  

                    stream.Write(data, 0, data.Length);  

                }  

            }  

            return request.GetResponse() as HttpWebResponse;  

        }     

  

        static void Main(string[] args)  

        {  

            string url = "https://192.168.1.101/httpOrg/create";  

            Encoding encoding = Encoding.GetEncoding("utf-8");  

            IDictionary<string, string> parameters = new Dictionary<string, string>();  

            parameters.Add("authuser", "*****");  

            parameters.Add("authpass", "*****");  

            parameters.Add("orgkey","*****");  

            parameters.Add("orgname", "*****");  

            HttpWebResponse response = Program.CreatePostHttpResponse(url,parameters,encoding);  

            //打印返回值  

            Stream stream = response.GetResponseStream();   //获取响应的字符串流  

            StreamReader sr = new StreamReader(stream); //创建一个stream读取流  

            string html = sr.ReadToEnd();   //从头读到尾，放到字符串html  

            Console.WriteLine(html);   

        }  

    }  

}