C # simulate landing and continue to visit other pages

Using System;
Using System.Collections.Generic;
Using System.IO;
Using System.Linq;
Using System.Net;
Using System.Text;
Using System.Threading;

Namespace ConsoleApplication4
{

Class Program
{
static void Main (string[] args)
{
Testing the information below is available in F12.
Httpheader Header = new Httpheader ();
header.accept = "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8";
Header.contenttype = "application/x-www-form-urlencoded";//This F12 is not, this must be, this is the content type of the request header, otherwise the parameters can not pass through.
Header.method = "POST";
Header.useragent = "mozilla/5.0 (Windows NT 6.1; WOW64) applewebkit/537.36 (khtml, like Gecko) chrome/36.0.1985.125 safari/537.36 ";
Header.maxtry = 300;

String poststring = "loginname=admin&loginpwd=123456";//Here is the parameter passed, you can use the tool to grasp the packet analysis, but also can analyze itself, mainly in the form of each name should be added in

String html = htmlhelper.gethtml ("Http://localhost:12055/Admin/Home/MainForm", Htmlhelper.getcookie ("HTTP/ Localhost:12055/admin/login/checklogin ", poststring, header), header);

Console.WriteLine (HTML);

Console.readkey ();
}

public class HtmlHelper
{
//<summary>
//Get cookies
//</summary>
//<param Name= "Loginurl" ></PARAM>
//<param name= "PostData" ></PARAM>
//<param name= "header "></PARAM>
//<returns></returns>
public static Cookiecontainer GetCookie (string Loginurl, String postdata, Httpheader header)
{
HttpWebRequest request = null;
HttpWebResponse response = null;
Try
{
Cookiecontainer cc = new Cookiecontainer ();
request = (HttpWebRequest) webrequest.create (loginurl) ;
Request. Method = Header.method;
Request. ContentType = Header.contenttype;
byte[] Postdatabyte = Encoding.UTF8.GetBytes (postdata);
Request. ContentLength = Postdatabyte. Length;
Request. AllowAutoRedirect = false;
Request. Cookiecontainer = CC;
Request. KeepAlive = true;

Submit Request
Stream stream;
stream = Request. GetRequestStream ();
Stream. Write (postdatabyte, 0, Postdatabyte. Length);
Stream. Close ();

Receive response
Response = (HttpWebResponse) request. GetResponse ();
Response. Cookies = Request. Cookiecontainer.getcookies (Request. RequestUri);

Cookiecollection Cook = Response. Cookies;
Cookie string format
String strcrook = Request. Cookiecontainer.getcookieheader (Request. RequestUri);

return cc;
}
catch (Exception ex)
{

Throw ex;
}
}

<summary>
Get HTML
</summary>
<param name= "GetUrl" ></param>
<param name= "Cookiecontainer" ></param>
<param name= "Header" ></param>
<returns></returns>
public static string gethtml (String getUrl, Cookiecontainer Cookiecontainer,httpheader header)
{
Thread.Sleep (1000);
HttpWebRequest HttpWebRequest = null;
HttpWebResponse HttpWebResponse = null;
Try
{
HttpWebRequest = (HttpWebRequest) httpwebrequest.create (GETURL);
Httpwebrequest.cookiecontainer = Cookiecontainer;
Httpwebrequest.contenttype = Header.contenttype;
HttpWebRequest.ServicePoint.ConnectionLimit = Header.maxtry;
Httpwebrequest.referer = GETURL;
Httpwebrequest.accept = header.accept;
Httpwebrequest.useragent = header.useragent;
Httpwebrequest.method = "GET";
HttpWebResponse = (HttpWebResponse) httpwebrequest.getresponse ();
Stream responsestream = Httpwebresponse.getresponsestream ();
StreamReader StreamReader = new StreamReader (Responsestream, Encoding.UTF8);
String html = Streamreader.readtoend ();
Streamreader.close ();
Responsestream.close ();
Httpwebrequest.abort ();
Httpwebresponse.close ();
return HTML;
}
catch (Exception e)
{
if (HttpWebRequest! = null) Httpwebrequest.abort ();
if (HttpWebResponse! = null) httpwebresponse.close ();
return string. Empty;
}
}
}

public class Httpheader
{
public string ContentType {get; set;}

public string Accept {get; set;}

public string useragent {get; set;}

public string Method{get;set;}

public int Maxtry {get; set;}
}

}
}

C # simulate landing and continue to visit other pages