C# 15 Union Types Explained Simply – A Better Way to Handle Multiple Return Types
C# 15 introduces Union Types — a simple and type-safe way to handle multiple return types. Learn how it works and how to try it with .NET 11 Preview 2.
Category .NET
Data Validation in .NET 10 Minimal APIs – Built-In, Clean, and No Extra Libraries
.NET 10 introduces built-in data validation for Minimal APIs—no need for external libraries. This guide walks through Data Annotations, custom validation, and automatic error handling with real-world examples.
New LINQ Methods in .NET 9: Index, CountBy, and AggregateBy
.NET 9 introduces powerful new LINQ methods — Index, CountBy, and AggregateBy. This guide explains each method with before-and-after examples, showing how they reduce boilerplate and make queries more readable.