Add Auth0 Authentication to Blazor Hybrid Apps in .NET MAUI

Blog Discussions
22

The code provided in this article is for .NET 8.0. It has not been tested with .NET 9.0

1 Like
23

Nevermind, I was missing AddCascadingAuthenticationState().

24

Cool! Thank you for sharing :slightly_smiling_face:
So this means it’s working in .NET 9 as well, right?

25

Yes it does as long as you don’t forget the cascading authentication state :slight_smile:

1 Like
26

Hello Andrea, thanks for the article.

I only have one question related to the Blazor Web project. My Maui solution has 3 projects, the mobile the shared project and the web project (Blazor WASM). Currently only the Mobile works, but when I run the web I am getting error:

rit: Microsoft.AspNetCore.Components.WebAssembly.Rendering.WebAssemblyRenderer[100]
Unhandled exception rendering component: Could not load type of field ‘Auth0.OidcClient.WebAuthenticatorBrowser+d__0:<>u__1’ (3) due to: Could not load file or assembly ‘Microsoft.Maui.Essentials, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null’ or one of its dependencies.
System.TypeLoadException: Could not load type of field ‘Auth0.OidcClient.WebAuthenticatorBrowser+d__0:<>u__1’ (3) due to: Could not load file or assembly 'Microsoft.Maui.Essentials, Version=1.0.0.0

In order to make the authentication to work for the web project on Blazor WebAssembly should I do the implemention with the traditional approach for Blazor WASM ? or there is a way to use the same logic for all ?

Thanks

27

Hey @dsapo,
You can’t use the MAUI SDK in a Blazor WASM app.
A Blazor WASM app is still a web app, not a native app. You should use the approaches described here or here (it depends on the .NET version and/or the hosting model)

1 Like