Blazor Server Application Global Error Handling

Question

Blazor Server Application Global Error Handling

Cenk 806

Hello,

I am working on a Blazor Server Application, I want to log errors into the database table and I wonder if there is a single/global catch? Can you please guide me?

Thank you.

AgaveJoe 20,301 Reputation points

2022-08-22T20:02:04.487+00:00

First, read the official documentation. If you still have a question after learning how Blazor exceptions work then post your code, explain how you expect the code to function, and what actually happens.

Handle errors in ASP.NET Core Blazor apps
Yiyi You - MSFT 516 Reputation points

2022-08-23T06:39:05.977+00:00

Hi,@Cenk ,
you can try to refer to ErrorBoundary in the offcial doc.If you want to handle global exception,you can try to create a CustomErrorBoundary (inherit the ErrorBoundary) and override OnErrorAsync(Exception exception),you can also log errors in it.

AgaveJoe 20,301 Reputation points

2022-08-22T20:02:04.487+00:00

First, read the official documentation. If you still have a question after learning how Blazor exceptions work then post your code, explain how you expect the code to function, and what actually happens.

Handle errors in ASP.NET Core Blazor apps
Yiyi You - MSFT 516 Reputation points

2022-08-23T06:39:05.977+00:00

Hi,@Cenk ,
you can try to refer to ErrorBoundary in the offcial doc.If you want to handle global exception,you can try to create a CustomErrorBoundary (inherit the ErrorBoundary) and override OnErrorAsync(Exception exception),you can also log errors in it.

Answer 1

Hello,

I Would use the standard .NET ILogger.
injecting ILogger in your components and configuring it at application startup, you can centrally manage logging via configuration in an easy way.

You're talking about logging the errors in a database table, which is fine, but think where to log the errors in case the logging dataabase isn't there.
Maybe make a difference between system errors (like logging database unavailable) and application errors (that are being logged in your database).

This article describes nicely how to implement logging:
https://learn.microsoft.com/en-us/aspnet/core/fundamentals/logging/?view=aspnetcore-6.0

and this article describes how to apply this in Blazor:
https://learn.microsoft.com/en-us/aspnet/core/blazor/fundamentals/logging?view=aspnetcore-6.0

Have fun,

Cheers,

Willem

Blazor Server Application Global Error Handling

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