Automate sign in process and store cookie

Hi, This is a mini R&D project. We have a specific website that we use during our daily work. We want to be able via C# to sign in to the specific site. During the sign in process, we are redirected to [login to view URL] and here we have to fill in a username and password. After the sign in is complete a cookie is stored. This cookie we need to export the content of to another file. Using fiddler we can see what calls / redirects that is being made, while we can see the different data inputs. Some of the data is json and some is old school forms with inputs and submits. We will be able to supply a dummy account while the investigation and testing is going on. The code being developed does not have to be production ready / quality, hence the statement about R&D. We understand that the task is somewhat difficult to estimate given the incomplete specifications. Best regards