Exception Handling in ASP.NET Core - Middleware vs Filters - What's Best?

When it comes to global exception handling in ASP.NET Core we have two major options: we either use an exception handling middleware or an exception filter. But what's the best way to go? As almost always in programming, it depends. The most important thing is to understand how these approaches are different and take informed decisions. In this video I provide a theoretical and practical comparison between these two approaches. But, in the end, the decision is yours.
#AspNetCore #DotNetCore #dotnet
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VIDEO: FIlters in ASP.NET Core: • Unlock the Power of AS...
Contents
1. Intro: 00:00
2. Demo app overview: 01:41
3. The error contract: 03:00
4. Exception handler middleware: 04:55
5. Exception filter: 07:27
6. Theoretical difference between middleware and filter: 09:28
7. Practical differences: 11:10
8. Conclusion: 18:11

[@YngvinLion]

throwing exceptions has never been so much fun, thx))
Great video, very clear explanation and good comparison!

[@TheTriggertrigger]

What a wonderful video, thank you so much for taking the time to put it together. It was clear and well explained, one of the best I've seen, and I've seen a lot. Well done again. I appreciate your work. It's the first video of yours I've seen and I've already subscribed. I'm really looking forward to watching more of then. You mentioned that you could make a video going into some more of the concepts you covered. I'd appreciate that very much when you have the time. All the best!

[@abhinavsharma2268]

The way you explain, it helps a lot for a beginner like me. PLEASE MAKE ONE VIDEO DEDICATED TO EXCEPTION HANDLING MIDDLEWARE. 🙏 THANK YOU SO MUCH.

[@AlbertTackie]

Dude, great video, very nice simple breakdown. I came across the concept when I used to work in Spring/Java and was delighted to find out .NET has a comparable feature. Very well presented, I feel like I have a base-level working understanding of the implementation now, as I go return to the documentation. You've got my sub!

[@Codewrinkles]

Glad it helped! Asp.NET COre and Spring Boot have a lot in common. I guess MIcrosoft always gets "inspiration" from Sping Boot and vice versa.

[@EniloracCodes]

Thank you for this video. Very nice explanation and you always teach me something new!

[@shahzadahmad-vg2ou]

Very informative video, Thanks a lot.

[@samsonmayeem5548]

The encircling style of applying them is the most interesting thing after implementation

[@JuanCamba81]

Awesome well explained!

[@Codewrinkles]

Glad you liked it

[@itssalmanvlogs_]

One of the best explanations, Thank you

[@Codewrinkles]

Glad it was helpful!

[@Tamer_Ali]

Thanks Mr.Dan, you awesome 👍

[@Codewrinkles]

My pleasure!

[@karthikeyankanan2040]

I watched your video and learned petty good. I would you like you to create common response class for all the request in project. If possible plz post that video. Thanks

[@victormoreno2767]

Great video, you know a lot! You pick my interest when mentioning the different exception strategies in layer. Also, I added the "filter exception" portion (based on what you explained) to my project, so am I missing something else, or this is it? Thank you for the videos, I am learning a lot from you.

[@Codewrinkles]

Stay tuned for the next vide tomorrow :) I think it will answer your queestions.

[@NaikIsKing]

Very nice

[@shen-iz7nv]

Thank you so much for sharing this video. I always want to know what's the different between exception filter and exception middleware before watching this video, In short, We can only access Httpcontext in exception middleware directly, But in exception filter, Microsoft writes a lot of methods in ExceptionContext, We can more easily to use these methods to achieve what we want in our project.

[@Codewrinkles]

Glad it was helpful!

[@mihunt3r929]

Thank you very much for this explanation. Great video

[@Codewrinkles]

Glad it was helpful!

[@mihunt3r929]

@@Codewrinkles yes it definitely is. I'm having interview tomorrow, hope your vid will help me

[@Codewrinkles]

Good luck!

[@mihunt3r929]

@@Codewrinkles thank you very much)

[@mihunt3r929]

@@Codewrinkles actually I had question about Middlewares and Action Filters on the interview. So your video was more than helpful. Waiting for the decision of company

[@coding-gemini]

Great video, very well explained. Subscribing for more thanks 🙏

[@Codewrinkles]

Thanks for subscribing. You can expect two videos per week. You can already start by watching the latest ones. I think they might be interesting.

[@erivalo]

Go for the exception handling video pls.. or there is already one...?

[@galdakaMusic]

Hi!! Great video. How can I access to user name claims un Middleware opción? Thanks un advance.

[@advivedi9]

Thanks

[@Codewrinkles]

Thank you for the super! I'm glad you find the content useful.

[@user-lx4oc6ss5x]

Thanks for this really helpful video. Would it be possible to use both to benefit from both their capabilities?

[@Codewrinkles]

I guess that would be possible. The advantage for this is that you would also catch exceptions generated after the exception filter creates the response. This could happen if the response travels through different middleware components that perform logic based on the response and one of them might throw an error.
What I found out so far is that if you are not using custom middleware on the pipeline, then this approach wouldn't bring much value.

[@mocococo2877]

Greetings from Bulgaria. Great tutorial and work. Thank you,
Please consider my question. On your schematic - should we understand that when using middleware then the request turns around and never continues to the rest of the blocks, like Controls creation, Auth. filters, etc.
Thank you.

[@Codewrinkles]

It depends where the excepton is thrown. I suppose in most of the cases the request will arrive at controller, filters and so on.

[@arnell22336]

Hi! Did you create the video about exceptions handler by using middleware?

[@Codewrinkles]

Hmmm. I don't think so :(

[@karthikbalasubramanya]

Exception Middleware came later before exception filters exists... As u have concluded that exception filters is best to use compared to middleware..is there any specific reason when it is suitable to use Middleware than filters??

[@Codewrinkles]

I don't recall to have said that it's better generally. I have compared both, I have showed what information we have available in each of them and my conclusion was that I found filter more suitable. Therefore, that's whay I'm using in all my projects.
My main argument for this is that filters are part of the action executing pipeline and therefore you have access to information that you don't have in the middleware. Or, at least, not easily accessible.

[@fonskeee]

what about the use of IExceptionHandlerFeature in the middleware ?

[@Codewrinkles]

Well, that still needs to be implemented in a middleware, right? At least that's how I've seen it implemented and can't imagine how it would work otherwise. I guess that would be useful when we expect a certain type of exception. But the point I made in the video is that in an exception filter you have access to more contextual information. And I guess this still applies. I'm curious to hear your opinion on this.

[@fonskeee]

@@Codewrinkles With an exception filter you can indeed access the http context, routing and more. Since this does not apply to middleware I made the point of using IExceptionHandlerFeature in middleware to not only return a status code 500 but to dig deeper into the exception that occurred, either as info for the user or to log the exception and more

[@samsonmayeem5548]

@@fonskeee you can do it. but becareful

[@rd_45]

Why not plain try catch?

[@ermahesh2009]

can we use both?

[@Codewrinkles]

Technically yes, but what would be the practical benefit?

[@jayakumar2927]

Can you share github repo