First of all I am not doing any kind of hacking, because I am using my valid credentials to access the site. I am creating an application to access that site from my windows application.
but I am not sure how to create a request for it. here is a request header which I got from chrome deveoper tool when I access the login page of the site.

than, to login I enter my credentials and it redirect it to my home page, the request header for it is here:

Any Idea how I do this via code? I am updating this question..that I know I can do this by HttpWebRequest..but I dnt know how to set that Cookie part.
Thanks