Observer: Implementation and Example
Learn the Observer design pattern by implementing an example program.
We'll cover the following...
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 ...