With every iteration of C#, we get more and more features that are meant to make our lives as developer a lot easier.

Let’s explore what’s new in C# 9, 10, 11, 12, 13 and 14!

We will look at how the language has changed and why these changes to the language will make us better C# developers, with less bugs in our code.

Testing is hard. Testing the right things in the right way is even harder. In this talk, I’ll show techniques that will help you write better, more productive tests.

We’ll explore mutation testing, which checks whether your tests actually catch bugs instead of just always passing. Property-based testing lets your code generate hundreds of input variations automatically, exposing edge cases you wouldn’t have thought of. And for complex data structures or legacy code, snapshot testing can capture outputs and catches unexpected changes over time.

App configuration. Settings. Secrets. We have all dealt with these things in our code without thinking much about it.

But how does this actually work in .NET and how do you make the most of it? And more importantly, how do you store them correctly and prevent leaking secrets?