I can fetch First name, Last name and email from google using dotnetopenauth by using WellKnownAttributes.Name.First and so on. I couldn't find a well known attribute that can fetch Profile picture. How cna I retrieve that?
Also, can I use dotnetopenauth to retrieve contacts from google?
There are samples that ship with DotNetOpenAuth that demonstrate downloading Google Contacts (OAuthConsumer and OAuthConsumerWpf).
Retrieving a profile picture is not in the samples. You'll have to look up the GData API to see if that's offered via OAuth or some other means.