Unlocking the Power of Events and Delegates in C#

Hello again! I'm excited to return with a nice, clear example that will help you understand the power of events and delegates in C#. These tools are essential for building flexible and maintainable applications, and I'm here to show you just how easy and powerful they can be.

In this article, we'll focus on building a C# console application that facilitates fundamental mathematical operations with dynamic user input. Employing events and delegates, the application notifies subscribers about the results of diverse mathematical operations. The program prompts users to input two numbers and select an operation (addition, subtraction, multiplication, or division), utilizing event handlers to display the outcomes.. This example will demonstrate how to use events and delegates to make our components communicate efficiently and flexibly.

What Are Events and Delegates?

Events and delegates in C# allow objects to communicate with each other in a loosely coupled manner. This means that you can notify multiple components when something important happens, without making them directly dependent on each other.

Let's dive in and see how it all works!

1- Events Class

The Events class defines the events that can be triggered when mathematical operations are performed. It also provides methods to raise these events.

2- OperationArgs Class

The OperationArgs class is a custom event arguments class that holds the details of a mathematical operation.

3- ResultDisplay Class

The ResultDisplay class contains methods that handle the events raised by MathOperations. These methods display the result of the operation.

4- MathOperations Class

The MathOperations class performs various mathematical operations. When an operation is performed, it raises the corresponding event.

5- Start Class (Main)

The Start class is the entry point of the application. It handles user input, sets up dependencies, subscribes to events, and triggers mathematical operations.