This question isn't exactly the same, but the authorizer concept might be interesting to you:
How to use Linq to Twitter inside a web service?
Essentially, you want to instantiate an authorizer, assigning values to the Credentials property, like this:
var auth = new SingleUserAuthorizer
{
Credentials = new SingleUserInMemoryCredentials
{
ConsumerKey = ConfigurationManager.AppSettings["twitterConsumerKey"],
ConsumerSecret = ConfigurationManager.AppSettings["twitterConsumerSecret"],
TwitterAccessToken = ConfigurationManager.AppSettings["twitterAccessToken"],
TwitterAccessTokenSecret = ConfigurationManager.AppSettings["twitterAccessTokenSecret"]
}
};
Then, instantiate your TwitterContext, like this:
var ctx = new TwitterContext(auth);
The particular authorizer, in this case, is SingleUserAuthorizer but you can use the same authorizer you used to get the original credentials. Just provide all 4 credentials and LINQ to Twitter will bypass the user re-direct for authorization on Twitter.