在.net中使用xmlhttp组件读取网页源码

         using MSXML2; 




          string url = "http://www.s**.com";
          
            XMLHTTPClass myXMLHTTP = new XMLHTTPClass();
            //string url = "http://www.s**.com";
            myXMLHTTP.open("GET", url, false, "", "");
            myXMLHTTP.send("");
            this.textBox1.Text = myXMLHTTP.responseText;

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        public static CookieContainer PostLogin()
        {
            string url = "http://www.s**.com";
            //string args = "username=c5k00144&passwd=aa0000";
            //string outdata = "";

            string args = "";
            string outdata = "";

            Encoding encoding = Encoding.GetEncoding("gb2312");

            CookieCollection myCookies = null;
            CookieContainer myCookieContainer = new CookieContainer();

            HttpWebRequest myHttpWebRequest = (HttpWebRequest)WebRequest.Create(url);
            myHttpWebRequest.Accept = "image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-excel, application/msword, application/x-shockwave-flash, */*";
            //myHttpWebRequest.Referer = "http://www.s**.com";
            myHttpWebRequest.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; Maxthon; .NET CLR 2.0.50727)";
            myHttpWebRequest.ContentType = "application/x-www-form-urlencoded";
            myHttpWebRequest.Method = "POST";
            myHttpWebRequest.CookieContainer = myCookieContainer;
            // 写入
            byte[] b = encoding.GetBytes(args);
            myHttpWebRequest.ContentLength = b.Length;
            using (System.IO.Stream sw = myHttpWebRequest.GetRequestStream())
            {
                sw.Write(b, 0, b.Length);
                if (sw != null)
                    sw.Close();
            }
          
         

            HttpWebResponse response = null;
            System.IO.StreamReader sr = null;
            response = (HttpWebResponse)myHttpWebRequest.GetResponse();
            myCookies = response.Cookies;
            sr = new System.IO.StreamReader(response.GetResponseStream(), encoding);
            outdata = sr.ReadToEnd();
            return myCookieContainer;
        }

        public static string GETCommand(string url, CookieContainer myCookieContainer)
        {
            string outdata = "";
            Encoding encoding = Encoding.GetEncoding("gb2312");

            HttpWebRequest myHttpWebRequest = (HttpWebRequest)WebRequest.Create(url);
            myHttpWebRequest.ContentType = "text/html";
            myHttpWebRequest.Method = "GET";
            myHttpWebRequest.CookieContainer = myCookieContainer;

            HttpWebResponse response = null;
            System.IO.StreamReader sr = null;
            response = (HttpWebResponse)myHttpWebRequest.GetResponse();
            sr = new System.IO.StreamReader(response.GetResponseStream(), encoding);
            outdata = sr.ReadToEnd();

            return outdata;
        }

        private string GetContentFromUrll(string _requestUrl)
        {
            string _StrResponse = "";
            HttpWebRequest _WebRequest = (HttpWebRequest)WebRequest.Create(_requestUrl);
            _WebRequest.Method = "GET";
            WebResponse _WebResponse = _WebRequest.GetResponse();
            System.IO.StreamReader _ResponseStream = new System.IO.StreamReader(_WebResponse.GetResponseStream(), System.Text.Encoding.GetEncoding("gb2312"));
            _StrResponse = _ResponseStream.ReadToEnd();
            _WebResponse.Close();
            _ResponseStream.Close();
            return _StrResponse;
        }

        public string GetContentFromWeb(string url, string acyuser, string acypass, string indata)
        {
            StringBuilder sb = new StringBuilder();
            object acyen = false;
            XMLHTTPClass myXMLHTTP = new XMLHTTPClass();
            try
            {
                myXMLHTTP.open("get", url, acyen, acyuser, acypass);
                myXMLHTTP.setRequestHeader("Accept-Lauguage", "zh-cn");
                myXMLHTTP.setRequestHeader("Content-Type", "text/html;charset=gb2312");
                myXMLHTTP.send(indata);
                //byte[] DefaultBytes = (byte[])myXMLHTTP.responseBody;
                //sb.Append(Encoding.Default.GetString(DefaultBytes));
                sb.Append(myXMLHTTP.responseText);
            }
            catch (Exception ex)
            {
                string tmp = ex.Message;
                return "";
            }
            return sb.ToString();
        }

        public string GetContentFromWeb(string url, string indata)
        {
            StringBuilder sb = new StringBuilder();
            object acyen = false;
            object acyuser = null;
            object acypass = null;
            XMLHTTPClass myXMLHTTP = new XMLHTTPClass();
            try
            {
                myXMLHTTP.open("get", url, acyen, acyuser, acypass);
                myXMLHTTP.setRequestHeader("Accept-Lauguage", "zh-cn");
                myXMLHTTP.setRequestHeader("Content-Type", "text/html;charset=gb2312");
                myXMLHTTP.send(indata);
                sb.Append(myXMLHTTP.responseText);
            }
            catch (Exception ex)
            {
                string tmp = ex.Message;
                return "";
            }
            return sb.ToString();
        }

        public string GetContent(string url)
        {
            string content = "";
            HttpWebRequest myHttpWebRequest = (HttpWebRequest)WebRequest.Create(url);
            HttpWebResponse myHttpWebResponse = (HttpWebResponse)myHttpWebRequest.GetResponse();
          
          //  WebResponse myResponseStream = myHttpWebResponse.GetResponseStream();

            System.IO.Stream myResponseStream = myHttpWebResponse.GetResponseStream();

            System.IO.StreamReader myStreamReader = new System.IO.StreamReader(myResponseStream, Encoding.GetEncoding("gb2312"));
            content = myStreamReader.ReadToEnd();
            myStreamReader.Close();
            myResponseStream.Close();
            return content;
        }