Unsubscribing from events in Blazor

[aL3891]

Hello, i'm fairly new to blazor so i'm sorry if this is an obvious question.
I'm wondering what the best practice if subscribing and unsubscribing to events from an injected service in a blazor component.

i have a ILogger service and a LogView component, in the component i subscribe to the event like this:

protected override void OnAfterRender(bool firstRender)
{
    if (firstRender)
    {
        Logger.NotifyLog += OnNotify;
    }
 ...
}

First of all, is that the "right" way to do it? (it seems to be from the examples i've seen), but secondly, where should i unsubscribe from the event? There is no Hide or Stop type method that i've seen that's called when the component should stop updating itself.

Or are the event subscriptions cleaned up some other way? i have a custom proxy thing that's using weakreferences for this purpose, but if i remember correctly from netFX, regular events do not work like that right?

[campersau]

You can implement the IDisposable interface and unsubscribe there. It is called when the component is removed. https://docs.microsoft.com/en-us/aspnet/core/blazor/components?view=aspnetcore-3.0#component-disposal-with-idisposable
Async disposal is tracked here #9960

[aL3891]

aha, great, thanks!