.NET Engineer | .NET 9 · C# 13 · EF Core 9 | 12 min read
You are 11 PM deep in a sprint. You write a quick LINQ query, shove the result into a Dictionary, and move on. It compiles. It runs. Three weeks later, a typo in a property name causes a RuntimeBinderException in production. This article is about not doing that.
Table of Contents
What Are Anonymous Types, Really?
The Core Problem — Why the Cast Is Mandatory
The Fix — Project the Email Straight Out
.NET 9 Brain Storm — Where, Why & How
Real-World Technical Use Case
When to Use What — The Verdict Table
Senior Rules of Thumb
