Avoid Using C# Events in #ASPNETCore Applications ardalis.com/avoid-using-... by @ardalis.com - ThreadSky

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dmitry-pavlov.bsky.social • 69 days ago

Avoid Using C# Events in #ASPNETCore Applications

https://ardalis.com/avoid-using-csharp-events-in-aspnetcore-apps/ by @ardalis.com

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kapitar.bsky.social•69 days ago

Yea I wonder if there are any good used cases for events left, now that WinForms and kin are dwindling.

The whole RAD-ish component model I suppose, is passing.

dmitry-pavlov.bsky.social•64 days ago

Acutally, events are still cool even in Blazor Wasm app UI components (especially when timers, or other async workers are involved). They just should be used carefully - if you subscribe and raise an event, make sure you won't forget unsibscribe it on dispose.

kapitar.bsky.social•64 days ago

Ah ok, I didn't realise they were being used there.

About the unsub, does that mean you have to manage your own delegate instance somewhere and -= it, or does the Blazor markup compiler help you out there?

dmitry-pavlov.bsky.social•63 days ago

Hope Blazor UI components will get a standard way to "clean up" all needed in future versions, as implementing IDisposable for UI component is annoying, especiually when you have to combine it with IAsyncDisposable which is often there in the base UI component class from 3rd party UI Blazor library.

kapitar.bsky.social•62 days ago

Yea I've been following it the progress of Blazor lately.

I worry that it has the same underlying promise of "make web apps without being a web developer" which somewhat buried WebForms in a lot of unintentional complexity.

dmitry-pavlov.bsky.social•63 days ago

You should take care of -= yourself. If you use events in Blazor UI component, the best place to handle that in IDisposable.Dispose. Here is an example (find an example in the section "Event Handlers") https://learn.microsoft.com/en-us/aspnet/core/blazor/components/lifecycle?view=aspnetcore-9.0#event-handlers

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