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