CODEWITHSUNDEEP
javascriptc#.netconsole-application
Tharanya
Tharanya

Reputation: 11

Retrieve values from existing open tab in Chrome using C#

I am trying to build a console application using c# .net.. I need one particular functionality which is to retrieve values from an external website. The thing is we need to sign in to that website. I am able to open the page that i need using process.start in chrome signed in with the values i need.. but problem is when retrieving the value from page.. i thought of getting source code but every way i try it does not take the session and hence i am getting just error page source code as i am just entering the URL n not accessing the already opened tab? Is there any other way available either using JavaScript or c#?

Upvotes: 0

Views: 1334

Answers (1)

Mazhar Qayyum
Mazhar Qayyum

Reputation: 630

Use WebClient API to login and download page data. You will need to make it cookie aware in order to maintain session. You will need to add reference to System.Web Assembly to use this API in console application. 

public class CookieAwareWebClient : WebClient
{
    public CookieAwareWebClient()
    {
        CookieContainer = 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;
    }
}

Now use it like

using (var client = new CookieAwareWebClient())
{
    var values = new NameValueCollection
    {
        { "username", "john" },
        { "password", "secret" },
    };
    client.UploadValues("http://domain.loc/logon.aspx", values);

    // If the previous call succeeded we now have a valid authentication cookie
    // so we could download the protected page
    string result = client.DownloadString("http://domain.loc/testpage.aspx");
}

I borrowed this piece of code from WebClient accessing page with credentials

Upvotes: 1

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