turkayurkmez/innovaIleriCsharp — reverse-engineered prompt

Build me a C# learning project for an advanced C# course. I want it to be a collection of small, easy to run examples that show the main idea behind each topic, not one big app.

Please include examples for collections, generics, delegates and events, custom attributes, reflection, dynamic types, nullable and optional parameters, tuples, serialization, memory management, multithreading, observable collections, operator overloading, indexers, and a simple plugin style example. Also add a small async Web API example using Entity Framework, plus a couple of simple MVC style examples that show ViewBag and form data. A tiny slot machine console sample would be nice as a fun demo.

Keep the code clean and beginner friendly, with comments that explain what is happening. Add a short README that tells me what each sample does and how to run it. Look up current C# docs online if you need to.