How to create generic delegates and use them in event handling?

Question

Aryan Kumar · Answer

To create generic delegates and use them for event handling in C#, you can follow these steps:
Step 1: Define a generic delegate.
public delegate void GenericEventHandlerandlt;T>(T data);
Step 2: Create an event using the generic delegate.
public class EventPublisher
{
    public event GenericEventHandlerandlt;string> StringEvent;
    public event GenericEventHandlerandlt;int> IntEvent;
}
Step 3: Publish events.
public class EventPublisher
{
    public event GenericEventHandlerandlt;string> StringEvent;
    public event GenericEventHandlerandlt;int> IntEvent;
    public void PublishStringEvent(string message)
    {
        StringEvent?.Invoke(message);
    }
    public void PublishIntEvent(int number)
    {
        IntEvent?.Invoke(number);
    }
}
Step 4: Subscribe to and handle events.
public class EventSubscriber
{
    public EventSubscriber(EventPublisher publisher)
    {
        publisher.StringEvent += HandleStringEvent;
        publisher.IntEvent += HandleIntEvent;
    }
    public void HandleStringEvent(string message)
    {
        Console.WriteLine($"Received string event: {message}");
    }
    public void HandleIntEvent(int number)
    {
        Console.WriteLine($"Received int event: {number}");
    }
}
Now you can create an instance of EventPublisher and 
EventSubscriber to demonstrate the use of generic delegates for event handling. This allows you to handle events with different data types using the same delegate.

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How to create generic delegates and use them in event handling?

Steilla Mitchel

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