The New Global Error Handling in ASP.NET Core 8

Error handling is critical for .NET APIs. I will split this video into two parts: errors I know how to handle and errors I don't know how to handle. For errors I know how to handle, I like using the Result pattern. It helps me get rid of exceptions and make my intent explicit. For errors I don't know how to handle, I'll use exceptions. To handle exceptions, I can create a global exception handler. This can be done using middleware or to hew IExceptionHandler in .NET 8.

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Global Error Handling in ASP.NET Core 8

3 Ways To Create Middleware In ASP .NET Core

Chapters
0:00 Errors that you know how to handle
2:02 Problem Details standard error response
5:32 Handling exceptions with Middleware
9:29 Handling exceptions with IExceptionHandler

[MrAlkazam]

Very nice! Short, concise and very useful - keep up the excellent work, Milan.

[Targeting-Must-End]

Thank you mam.
Content is Perfect balance between very technical, useful and just about the right amount of watching time.
Keep 'em rolling

[f.d.]

Thank you, Milan! Always up-to-date, I learned a lot from you in last month which helped me on my interviews!

[nirajchandrajoshi]

How to use this approach when we are using controllers ( not minimal api)

[zdxzxzdxzx]

Hey, Milan. Great work on your channel.
Quick question. Why would we need a middleware or implementing a custom IExceptionHandler in order to have logging and problem details for internal server errors? Isn't the default UseExceptionHandler middleware doing this already? Thanks, respect!

[philiperiskallaleal]

Dear Milan, thank you for the amazing video. One thing that got me wondering was the Idea of multiple ExceptionHandlers, as you mentioned in your video. How could one ensure a specific order in which these Handlers would be invoqued in case of an Exception that came from an Endpoint from your controller? Ideally, I would suggest to always keep a GlobalExceptionHandler (just like the one you implemented in this video), plus any other specific Exception Handler.

I thank you for your time, and I hope to hear from you soon.

[Wese]

Is there ultimately any benefit of choosing one Vs the other approach?

[RanjeethMD]

Nice. Problem details object is a nice addition to the framework.

[nicolaimagnussen]

Nice video as always my friend! In which place did you put the ProblemDetails class?

[alexramossilva]

Which validations should I run on the use cases, and which ones should I run on the domain?

[haraheiquedossantos]

Good job.
One question, why did you name the folder as /Infrastructure inside the Api project and not other name, like: /ExceptionHandlers?
The old and traditional Middlewares you have put inside /Middlewares folder.
And finally, in a real project using some layered architecture, would you put this implementation inside Infra layer or Presentation (where the WebApi resides) layer? 🤔

[alfonsdeda]

Hi Milan, great video, but how should I create a exception filter to handle API errors in caller api project, for example blazor?

[sigtrygguradv]

Hey Milan, what extension are you using for inline debug variable/parameter info?

[achalprajapati]

Thank you, Milan! Always Good Technical Video Post. I have one question. How to handle unauthorized controller in global. How to all generic message display error or status code wise?

[davide]

Hi Milan, I have .net 8 but my VS not recognize IExceptionHandler and his namespace. Can you give me some pointers?

[dariusghita]

i have got a problem, i am using sth similar to what you are doing for middleware, but my methods are called by background tasks done with quartz jobs. If i am calling the method manually from swagger/postmen it works, but with jobs doesn t

[shazaddin]

Hi, where can i access the code you used in the demonstration please?. Great video!

[sky]

Hi Milan, in the MVC Web Application, how to display the error message to view (/Home/Error)?

[john]

Is this valid for webapps that work with blazor or just for web apis?

[crutz]

Is there a reason to use the IExceptionHandler instead of simply implementing your own middleware?