I've Been Writing C# for Years. Here's What Nobody Told Me About React.

_When my team said we were adding a React frontend to our .NET API, I did what any self-respecting senior developer does. I Googled it. Watched a YouTube tutorial for 20 minutes. Closed the tab. Opened a new tab. Googled "React for C# developers." Got results that assumed I was either a complete beginner who didn't know what a variable was, or a JavaScript wizard who already knew what a closure was._ I was neither. I was a C# developer. I knew exactly what I was doing — just not in this language. So I figured it out the hard way. And now I'm going to save you the weeks I wasted by mapping every React concept directly to what you already know in C#. No "what is a variable" explanations. No JavaScript history lessons. Just: here's what you know, here's what it's called in React, here's why it works the same way. First, the mindset shift In C#, the server does the work. Your controller fetches data, builds a model, passes it to a Razor view, and the browser gets back finished HTML. The br