C# / Twitter Queries

I need a C# library that is capable of doing several twitter queries in the most efficient way (least number of queries) 1) Determine if a user X is following user Y 2) Get the latest tweet from user X I would prefer that this be done via twitter API and does not require the end user to login. I would like to provide these credentials for my own account inside the class library. This library will be used in an ASP.NET environment, so a test page done in ASP.NET is required. I also require all source code and documentation to any third party libraries in use. ## Deliverables In addition to the requirements above, 1) I must be able to pass any required login credentials via code. It is imperative that the process can run without the need to enter credentials interactively. 2) Since the twitter API only allows a limited number of queries per hour, I need these routines to be super efficient and handle the process in as few queries as possible. 3) You must test this with a twitter account that has a significant number of followers. For example 500+. The twitter API only returns 100 results per query, therefore you must be able to properly request the data using the cursor parameter to get each chunk.