Default interface methods are included in a new feature proposal for C# 8, which will allow developers to use the traits programming technique on the .NET platform.

In C# 9 lambda or anonymous methods can have a static modifier. This article talks about static anonymous functions and why they are useful, using code examples to illustrate the concepts.

This article examines fluent interfaces and method chaining and how you can work with them in C#. To work with the code examples provided in this article, you should have Visual Studio 2019 ...

For example, the source generator may combine the attributes on a partial method with a database’s schema to generate a method, completely with SQL, for a database call.

The BeginResolve method and IAsyncResult To avoid blocking your program’s execution (as in the first example), you can opt to use the asynchronous version of the Resolve method: BeginResolve.

There's more to say here -- you can, for example, call non-static (instance) methods in your C# code from JavaScript and you can return values from JavaScript to C#.