MAUI blazor an unhandled error has occurred

Question

If there is an error in the program, I get "An unhandled error has occured". With Blazor Web assembly I can open the developper tools in the browser to get the details of what happend. This is not possible in Blazor MAUI.

So how can I get the details of the error in Blazor MAUI?

What operating system? It works on my Blazor Maui apps. click in the window, then press F12 — Mister Magoo, Apr 26 '22 at 12:42

score 14 · Answer 1 · answered Jun 16 '22 at 21:23

There is a way to "remotely inspect" your app using the browser developer tool (F12). First, check if you added the AddBlazorWebViewDeveloperTools in your MauiProgram.cs

#if DEBUG
    builder.Services.AddBlazorWebViewDeveloperTools();
#endif

Run your App and open a new tab in your browser (outside the emulator) and type:

For Chrome: chrome://inspect
For Edge: edge://inspect

Wait a little and you will see an "inspect" button like below:

And you can even navigate in your App from there:

and how would you go about doing this if the app was in debug on a physical android device connected via usb ? — Shehroze Malik, Sep 19 '22 at 11:22

score 6 · Answer 2 · answered Aug 12 '22 at 21:38

6

When you get this type of error:

First click the screen with your mouse, then hit F12. Then select the Console link a top of Dev Tools Form.

answered Aug 12 '22 at 21:38

Terrence

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This is the right & simplest answer. – alelom Jan 30 '23 at 09:57

Cody · Answer 3 · 2022-05-26T21:31:04.683

3

You can open the developer tools by pressing ctrl + shift + i (or cmd + shift + i for Mac) when you have focus inside the web view.

Note: you need to enable the developer tools.

builder.Services.AddMauiBlazorWebView();

// enable the developer tools
builder.Services.AddBlazorWebViewDeveloperTools();
builder.Services.AddBlazorWebView();

edited May 26 '22 at 21:31

answered Apr 29 '22 at 00:12

Cody

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This does not work in MAUI. – jamie yello May 26 '22 at 03:32
1

it does for me. I am using it right now. you may need to add the tools, I will update my answer with this information. – Cody May 26 '22 at 21:30
@Cody but I need to debug this on an iOS and android device – YaRmgl Mar 15 '23 at 12:10
@YaRmgl this solution will work when using a simulator...not sure how debugging works with real devices to be honest. Haven't messed with this in a while. – Cody Mar 18 '23 at 00:55
Also does not work for me when running a MacCatalyst app (using Visual Studio for Mac 17.5.6) – Shaun3180 Jun 02 '23 at 17:19

MAUI blazor an unhandled error has occurred

3 Answers3

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