SignalR core hubconnection lambda action

Question

I have a simple SignalR core hub connection and the hub connection has an On method which takes an action handler I currently have it with a lambda like following but I want to use a event handler so I can unsubscribe it easily and prevent any memory leaks.

hubConnection.On<string, string>(ReceiveMethodKey, (user, message) =>
            {
                var finalMessage = $"{user} says {message}";
                // Update the UI
            });

Answer 1

Using a delegate:

class MyClass : IDisposable
{
    private Action<string, string> HubConnectionOnDelegate;

    private void InitOrSomething()
    {
        //Pointer to a method, anonymous method, whatever...
        HubConnectionOnDelegate = HubConnection_On;
    }

    private static void HubConnection_On(string user, string message)
    {
        var finalMessage = $"{user} says {message}";
        // Update the UI
    }

    private void Elsewhere()
    {
        hubConnection.On<string, string>(ReceiveMethodKey, HubConnectionOnDelegate);
    }

    public void Dispose()
    {
        HubConnectionOnDelegate = null;
    }
}