Managing SQL Server using C#

Question

I'm wondering whether and how I can do the following using .NET (more specifically, C#): - Get a list of users from SQL Server - Create a new Database in SQL Server - Create a new user in SQL Server - Connect to SQL Server with a user who has Windows Authentication enabled (instead of a login name and password inside SQL Server) - Find the answer to similar questions - Where are things like these documented? I've figured out how to create tables inside existing databases - you simply execute the correct SQL statement. But I can't figure out how to do these other things. Any help would be greatly appreciated.