web scraping - how to login into a website programatically using asp.net -

i have performed below process in vb.net login website project ! here have taken webbrowser control , named webbrowser1

private void button1_click(object sender, eventargs e)  {  navigate("http://www.websitename.com");   webbrowser1.document.getelementbyid("webpagetextboxnameforusername") .innertext = "myusername";   webbrowser1.document.getelementbyid("webpagetextboxnameforpassword") .innertext = "mypassword";  webbrowser1.document.getelementbyid("webpagebuttonnametologin") .invokemember("click");  }  public void navigate(string url)  {   webbrowser1.navigate(url);                  while(webbrowser1.readystate !=  webbrowserreadystate.complete)      {           application.doevents();       }  } 

now want follow same procedure in asp.net can people please me out here ?

thanks

here working example:

this class extends default .net webclient ability store cookies:

public class cookieawarewebclient : webclient {     public void login(string loginpageaddress, namevaluecollection logindata)     {         var parameters = new stringbuilder();         foreach (string key in logindata.keys)         {             parameters.appendformat("{0}={1}&",                 httputility.urlencode(key),                 httputility.urlencode(logindata[key]));         }         parameters.length -= 1;          var request = (httpwebrequest)webrequest.create(loginpageaddress);          request.method = "post";         request.contenttype = "application/x-www-form-urlencoded";         var buffer = encoding.ascii.getbytes(parameters.tostring());         request.contentlength = buffer.length;         using (var requeststream = request.getrequeststream())         {             requeststream.write(buffer, 0, buffer.length);         }          var container = request.cookiecontainer = new cookiecontainer();          using (var response = request.getresponse())         {             cookiecontainer = container;         }     }      public cookieawarewebclient(cookiecontainer container)     {         cookiecontainer = container;     }      public cookieawarewebclient()         : this(new cookiecontainer())     { }      public cookiecontainer cookiecontainer { get; private set; }      protected override webrequest getwebrequest(uri address)     {         var request = (httpwebrequest)base.getwebrequest(address);         request.cookiecontainer = cookiecontainer;         return request;     } } 

you can use this:

    protected cookieawarewebclient getauthenticatedclient()     {         var client = new cookieawarewebclient();          var logindata = new namevaluecollection                 {                       { "email", "test@email.com" },                       { "password", "testpassword" }                 };          client.login("https://myurl.com/login", logindata);          return client;     } 

and navigate internal page using:

        using (var client = getauthenticatedclient())         {             var html = client.downloadstring("https://myurl.com/internalpage");             //do stuff received html here         } 

i'm using logic in asp.net projects.