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, 0, 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 = 0;
            foreach (DictionaryEntry de in paramsOfUrl)
            {
                if (i == 0)
                {
                    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
详细：" + ex.Message);
            }
        }
    }
}