Let's break some expectations of .NET! .NET offers an incredibly powerful development platform. Equally powerful is the C# language. Both are packed with over two decades of features. But with great power comes great responsibility. Plenty of basic principles are put in place that come encoded in well-known coding conventions. What could happen if we were to break these rules? Could we measurably impact performance? Could we even cause unexpected behavior? In this session, we're going to subvert expectations. Can you figure out what we did behind the scenes? Can you uncover our sly little secrets? Through this rather unconventional approach to teaching, you will gain deeper insights into the semantics of the C# language and the internals of the .NET Runtime. Additionally, you shall learn the origin of certain guidelines and best practices as well as how established coding patterns and diagnostic analyzers are steering you towards the pit of success. It's time to break bad with C#!