ASP.NET MVC and ASP.NET Web API Code Samples

If you are looking for code samples on how to accomplish various scenarios using either ASP.NET MVC or ASP.NET Web API, you can find examples provided directly by Microsoft here: https://aspnet.codeplex.com/SourceControl/latest#Samples/ReadMe.txt

They have code samples ranging from authentication to attribute-based routing to using OWIN/Katana and various other scenarios!