A delegate is a type that safely encapsulates a method. An event is a message sent by an object to signal the occurrence of an action (Observer pattern).
C# Delegates and Events
Implement type-safe function pointers and the publisher-subscriber pattern.
Key Takeaways: C# Delegates and Events
Mastering C# Delegates and Events helps you write clean and reliable C# code. Follow standard conventions, test edge cases, and keep logic simple. Try running the code example below and complete the exercises to build confidence.
C# Delegates and Events Code Example
C#using System;
public delegate void Notify(string message);
class ProcessBusinessLogic {
public event Notify ProcessCompleted;
public void StartProcess() {
Console.WriteLine("Process Started.");
ProcessCompleted?.Invoke("Process Completed Successfully!");
}
}
class Program {
static void Main() {
var bl = new ProcessBusinessLogic();
bl.ProcessCompleted += (msg) => Console.WriteLine(msg);
bl.StartProcess();
}
}Output
Process Started. Process Completed Successfully!
Run this example on your own computer. The "Get Started" lesson shows how to set it up.
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