Capturing errors in hosted Blazor Web Assembly app

Question

I have a .net Hosted Blazor Web Assembly app (the one that generates 3 projects, Client (Blazor Web Assembly project), Server (Web API Server project), Shared.

How can I log errors on the server app? In regular .net Core apps I'd add something like this to the web.config for it to store errors in the Logs folder:

<aspNetCore arguments="" stdoutLogEnabled="true" hostingModel="InProcess" stdoutLogFile=".\logs\stdout">
</aspNetCore>

However, this doesn't work in the web.config file that Publish generates in the hosted Blazor app.

I found this file, but it doesn't suggest how to debug the Server project on the server: https://learn.microsoft.com/en-us/aspnet/core/blazor/debug?view=aspnetcore-6.0&tabs=visual-studio

I've googled this and can't find how to get the errors from the Server app. Ideally some kind of error emailed to me would be ideal but logs in a folder would be OK.

Thanks

Nb777 · Accepted Answer · 2022-03-22 06:38:39Z

1

You need to use some third party library like NLog.
Blazor server log works exactly like Asp.net core. See this link about using Nlog

answered Mar 22, 2022 at 6:38

Nb777

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2 Comments

niico Over a year ago

Thanks. I never had to use this with .net core MVC though. It could write errors to a log file (stdout) setup in web.config- or the home controller had an error handler already setup…

Nb777 Over a year ago

I got what you mean but this my way :)

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