100 C# Tips I Wish I Knew Earlier (Part 1)

After 20+ years working with C#, I've collected small lessons that made a huge difference in how I write code. Some of these saved me hours of debugging. Others improved performance or made my code cleaner overnight. Here are 25 practical C# tips I wish I knew earlier. Modern C# Features That Improve Your Code 1. Embrace Primary Constructors I once refactored a class with multiple constructors doing the same thing. It was messy. Primary constructors simplify everything: public class Person(string name, int age) { public string Name { get; } = name; public int Age { get; } = age; } Cleaner, shorter, and easier to maintain. 2. Use Collection Expressions Initializing collections used to feel verbose. List<int> numbers = [1, 2, 3, 4, 5]; Less typing, more clarity. 3. Use nameof for Safer Refactoring A typo once cost me hours. Console.WriteLine(nameof(Person.Name)); Now the compiler helps you catch mistakes. 4. Use Null-Coalescing for Safer Code Null reference bugs are painful. string