C# HttpRequest

 using System;
 using System.Collections;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using System.Net;
 using System.Security.Policy;
 using System.Text;
 using BDIC_BASE.Bonc.UI.Util;

 namespace BDIC_BASE.Bonc.DAL
 {
     public class HttpRequest
     {
         public static string DoPost(string url, Hashtable paramsOfUrl)
         {
             if (url == null)
             {
                 throw new Exception("url 为空");
                 //return "";
             }
             // 编辑并Encoding提交的数据
             byte[] data = GetJointBOfParams(paramsOfUrl);

             // 发送请求
             System.Net.HttpWebRequest request = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(url);
             request.Method = "POST";
             request.ContentType = "application/x-www-form-urlencoded";
             request.ContentLength = data.Length;

             Stream stream = request.GetRequestStream();
             stream.Write(data, , data.Length);
             stream.Close();

             // 获得回复
             System.Net.HttpWebResponse response = (System.Net.HttpWebResponse)request.GetResponse();
             StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
             string result = reader.ReadToEnd();
             reader.Close();

             return result;
         }

         public static string DoGet(string url, Hashtable paramsOfUrl)
         {
             if (url == null)
             {
                 throw new Exception("url 为空");
                 //return "";
             }
             // 编辑并Encoding提交的数据
             string  data = GetJointSOfParams(paramsOfUrl);
             // 拼接URL
             url += "?" + data;

             // 发送请求
             System.Net.HttpWebRequest request = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(url);
             request.Method = "GET";

             // 获得回复
             System.Net.HttpWebResponse response = (System.Net.HttpWebResponse)request.GetResponse();
             StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
             string result = reader.ReadToEnd();
             reader.Close();

             return result;
         }

         private static String GetJointSOfParams(Hashtable paramsOfUrl)
         {
             // 编辑并Encoding提交的数据
             StringBuilder sbuilder = new StringBuilder();
             int i = ;
             foreach (DictionaryEntry de in paramsOfUrl)
             {
                 if (i == )
                 {
                     sbuilder.Append(de.Key + "=" + de.Value);
                 }
                 else
                 {
                     sbuilder.Append("&" + de.Key + "=" + de.Value);
                 }
             }
             return sbuilder.ToString();
         }

         private static byte[] GetJointBOfParams(Hashtable paramsOfUrl)
         {
             // 编辑并Encoding提交的数据
             String stringJointOfParams =  GetJointSOfParams(paramsOfUrl);
             byte[] data = new ASCIIEncoding().GetBytes(stringJointOfParams);

             return data;
         }
     }

     public class HttpParam
     {
         public HttpParam()
         {
         }

         private Hashtable _paramsOfUrl;
         public Hashtable ParamsOfUrl
         {
             get
             {
                 if (_paramsOfUrl == null)
                 {
                     _paramsOfUrl = Hashtable.Synchronized(new Hashtable());
                 }
                 return _paramsOfUrl;
             }
             set { _paramsOfUrl = value; }
         }

         public void AddParamOfUrl(String paramKey ,String paramValue)
         {
             try
             {
                 ParamsOfUrl.Add(paramKey, paramValue);
             }
             catch (Exception ex)
             {
                 Console.WriteLine("可能为key重复\n详细：" + ex.Message);
             }
         }
     }
 }