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Observer: Implementation and Example

Explore the implementation of the Observer pattern in C#. Understand how to create Subject and Observer interfaces, manage subscriptions, and notify observers. This lesson demonstrates real-world usage with a console application example, helping you grasp event-driven communication between objects.

In this example, we’ll see how easily Observer objects can subscribe to events and unsubscribe from them. Similar to all other examples, we’ll use the console application template for this demo.

Adding interfaces

First, we’ll add an interface for our Subject object. This interface would allow Observer objects to subscribe and unsubscribe. We can also use this ...