Delegates and Func/Action in C#
From the C# Programming Language cheat sheet · Delegates and Events · verified Jul 2026
Delegates and Func/Action
Working with delegates and built-in delegate types
csharp
// Delegate declaration
public delegate void MyDelegate(string message);
// Using delegates
MyDelegate handler = Method1;
handler += Method2; // Multicast
handler("Hello");
// Built-in delegates
Action<string> logger = Console.WriteLine;
Func<int, int, int> add = (x, y) => x + y;
Predicate<int> isEven = n => n % 2 == 0;💡 Delegates are type-safe function pointers
⚡ Action for void methods, Func for methods with return values
📌 Multicast delegates can call multiple methods
🟢 Events are special multicast delegates with restrictions