1.1和2.0下进行https请求的不同实现

　　今天做项目中进行https请求时遇到这样的调试错误，内部错误：未能为 SSL/TLS 安全通道建立信任关系。错误页面：根据验证过程,远程证书无效。经过分析，在浏览器中打开要进行一个安全确认。就是这个对话框引起的问题。在网上搜了一下一般的解决办法，但是搜的内容比较少，现在在这里总结一下。

　　using System;
　　using System.Data;
　　using System.Configuration;
　　using System.Web;
　　using System.Web.Security;
　　using System.Web.UI;
　　using System.Web.UI.WebControls;
　　using System.Web.UI.WebControls.WebParts;
　　using System.Web.UI.HtmlControls;
　　using System.Net;
　　using System.IO;
　　using System.Text;
　　using System.Net.Security;
　　using System.Security.Authentication;
　　using System.Security.Cryptography.X509Certificates;

　　public partial class _Default : System.Web.UI.Page
　　{
　　    protected void Page_Load(object sender, EventArgs e)
　　    {
　　        //for 1.1 在2.0下ServicePointManager.CertificatePolicy已经过时
　　        //ServicePointManager.CertificatePolicy = new AcceptAllCertificatePolicy();
　　        //for 2.0
　　        //ServicePointManager.ServerCertificateValidationCallback = new System.Net.Security.RemoteCertificateValidationCallback(CheckValidationResult);
　　        HttpWebRequest request = (HttpWebRequest)WebRequest.Create("https://someurl");
　　        request.Method = "GET";
　　        HttpWebResponse response = (HttpWebResponse)request.GetResponse();
　　        Stream receiveStream = response.GetResponseStream();
　　        StreamReader readStream = new StreamReader(receiveStream, Encoding.UTF8);
　　        Page.Response.Write(readStream.ReadToEnd());
　　        response.Close();
　　        readStream.Close();
　　    }
　　    //for 2.0
　　    public bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
　　    {   //   Always   accept  
　　        return true;
　　    }
　　    //for 1.1
　　    internal class AcceptAllCertificatePolicy : ICertificatePolicy
　　    {
　　        public AcceptAllCertificatePolicy()
　　        {
　　        }

　　        public bool CheckValidationResult(ServicePoint sPoint, System.Security.Cryptography.X509Certificates.X509Certificate cert, WebRequest wRequest, int certProb)
　　        {
　　            //   Always   accept  
　　            return true;
　　        }
　　    }
　　}

　　http://www.cnblogs.com/david8k/archive/2006/11/06/551911.html