Update Blazor prerender with auth for 5.0

[guardrex]

... or merely find out why there's a regression here. It might not be a 5.0-related problem.

cc: @ChristianWeyer ... I probably won't reach this until after 🦃 T-bird Day holiday 🦃 ..... I'll get to this as soon as I can.

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Document Details

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• ID: 53f3209c-2414-9b35-6245-383c9b7c6338
• Version Independent ID: cc8dfcd6-8d93-5aa3-c381-2b613e88cdbe
• Content: ASP.NET Core Blazor WebAssembly additional security scenarios
• Content Source: aspnetcore/blazor/security/webassembly/additional-scenarios.md
• Product: aspnet-core
• Technology: aspnetcore-blazor
• GitHub Login: @guardrex
• Microsoft Alias: riande

[guardrex]

@ChristianWeyer ... Is the non-working behavior an error 💥 or no-op in nature?

... and are you merely claiming it doesn't work for 5.0 or both 5.0 and 3.x?

[ChristianWeyer]

@guardrex I tested it with 5.0 only.
See the demo video here:

When not doing prerendering, everything works fine and as expected.

I followed the docs here:
https://docs.microsoft.com/en-us/aspnet/core/blazor/security/webassembly/additional-scenarios?view=aspnetcore-5.0#support-prerendering-with-authentication

The demo code is here:
https://github.com/thinktecture/blazor-webassembly-demo/tree/prerender

[guardrex]

Thanks for that @ChristianWeyer ... Given that you're getting an error, there wouldn't be anything wrong with you opening a companion product unit issue and showing that ... and put the error message out in the issue comment, which is probably faster for them to consume than watching the GIF.

https://github.com/dotnet/aspnetcore/issues

Leave this issue open and add a cc: @guardrex and a cross-link to this docs issue to your opening comment over there. They'll probably be faster in reaching the issue/responding and in a better position to troubleshoot it.

[guardrex]

btw --- There's no <app> tag around the Component TH (<component>) for 5.0. I doubt that's causing this problem, but remove that <app></app> tag pair. I'll update the doc with that now and then react further based on their guidance.

[guardrex]

nah ... Blazor Server 3.x used the App component like that, so it's more likely that the tag drops for 5.0.

Yeah ... we'll need to hear from them. I'm not available for more testing at this time with the known 5.0 updates.

[ChristianWeyer]

btw --- There's no <app> tag around the Component TH (<component>) for 5.0. I doubt that's causing this problem, but remove that <app></app> tag pair. I'll update the doc with that now and then react further based on their guidance.

Which app tag are you referring to?