Not working with Blazor application about elmahcore HOT 5 OPEN

Had a quick look at this again. The new <ErrorBoundary> component in .NET 6 can be useful here. It normally is used to wrap components that might have issues on a page, but it's possible (but not advisable?) to wrap the whole App in one.

The component itself does not allow intercepting the error to log it, but you can create a subclass which can:

    public class GlobalErrorHandler : ErrorBoundary
    {
        protected override Task OnErrorAsync(Exception exception)
        {
            // log to ELMAH here
            ElmahExtensions.RaiseError(exception);
            return base.OnErrorAsync(exception);
        }
    }

You would then wrap the router in the App.razor in this:

<GlobalErrorHandler>
    <ChildContent>
        <Router AppAssembly="@typeof(App).Assembly">
            <Found Context="routeData">
                <RouteView RouteData="@routeData" DefaultLayout="@typeof(MainLayout)" />
                <FocusOnNavigate RouteData="@routeData" Selector="h1" />
            </Found>
            <NotFound>
                <PageTitle>Not found</PageTitle>
                <LayoutView Layout="@typeof(MainLayout)">
                    <p role="alert">Sorry, there's nothing at this address.</p>
                </LayoutView>
            </NotFound>
        </Router>
    </ChildContent>
    <ErrorContent>
        <p>Sorry an error occurred</p>
    </ErrorContent>
</GlobalErrorHandler>

Worth experimenting with but there may be issues with this approach I've not considered.

from elmahcore.

if the exception comes from a Controller the log is performed correctly:

    public class TestController : Controller
    {
        public IActionResult Index()
        {
            throw new InvalidOperationException("Test");
            //return View();
        }
   }

from elmahcore.

Is this a Blazor WASM or Blazor Server application? If Blazor Server then the error should be logged in Elmah, as it occurs on the server. If it's a Blazor WASM application Elmah won't see it as it happens on the client.

from elmahcore.

Is this a Blazor WASM or Blazor Server application? If Blazor Server then the error should be logged in Elmah, as it occurs on the server. If it's a Blazor WASM application Elmah won't see it as it happens on the client.

@conficient: Unfortunately, ElmahCore does not catch exceptions in Blazor Server components. I just tested this in my app. It only catches exceptions in my API controllers.

from elmahcore.

Elmah logs unhandled server errors. If you already do try/catch, it won't. However, you can log manually in your catch block like
ElmahExtensions.RaiseError(ex);

from elmahcore.