maui

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Description

When calling PopModalAsync, the navigation fails to go back to the calling page.

Ambiguous routes matched for: //IMPL_MainPage/IMPL_MainPage/MainPage/TestPage matches found: //IMPL_MainPage/IMPL_MainPage/MainPage/TestPage,//IMPL_MainPage/IMPL_MainPage/MainPage/TestPage Arg_ParamName_Name

Steps to Reproduce

1. Run reprodution project
2. Click "Go to test page"
3. Click "Go to choice page"
4. Click on a choice
5. See unexpected error

Link to public reproduction project repository

https://github.com/sinsedrix/MauiTests/tree/main/Modal

Version with bug

8.0.3 GA

Is this a regression from previous behavior?

Not sure, did not test other versions

Last version that worked well

Unknown/Other

Affected platforms

• Windows
• Android emulator

Affected platform versions

net8.0-windows10.0.19041.0

Did you find any workaround?

no

Relevant log output

System.ArgumentException
  HResult=0x80070057
  Message=Ambiguous routes matched for: //IMPL_MainPage/IMPL_MainPage/MainPage/TestPage matches found: //IMPL_MainPage/IMPL_MainPage/MainPage/TestPage,//IMPL_MainPage/IMPL_MainPage/MainPage/TestPage Arg_ParamName_Name
  Source=Microsoft.Maui.Controls
  Arborescence des appels de procédure :
   à Microsoft.Maui.Controls.ShellUriHandler.GetNavigationRequest(Shell shell, Uri uri, Boolean enableRelativeShellRoutes, Boolean throwNavigationErrorAsException, ShellNavigationParameters shellNavigationParameters)
   à Microsoft.Maui.Controls.ShellNavigationManager.<GoToAsync>d__14.MoveNext()
   à Microsoft.Maui.Controls.Shell.NavigationImpl.<OnPopModal>d__10.MoveNext()
   à Modal.ShellExt.<PopModalAsync>d__2.MoveNext() dans C:\wk\Tests\MauiTests\Modal\ShellExt.cs :ligne 24
   à Modal.ViewModels.BaseModalVm`1.<>c__DisplayClass4_0.<<GetResultAsync>b__0>d.MoveNext() dans C:\wk\Tests\MauiTests\Modal\ViewModels\BaseModalVm.cs :ligne 16

Verified this issue with Visual Studio 17.10.0 preview2 (8.0.14). Can repro on windows and android platforms with sample project.

Any workaround would be welcome...

you have two things registered to "MainPage" https://github.com/sinsedrix/MauiTests/blob/main/Modal/MauiProgram.cs#L22 https://github.com/sinsedrix/MauiTests/blob/main/Modal/AppShell.xaml#L13

I see this same problem without registering the same route twice if I have a base page which opens a page with PushModalAsync (new VM1()) which then opens a different page with PushModalAsync(new VM2) and then that last page attempts to call PopModalAsync()

Ambiguous routes matched for: //IMPL_LocalLAPTOP/IMPL_LocalLAPTOP/LocalLAPTOP/D_FAULT_BrowseDatabasePage14 matches found: //IMPL_LocalLAPTOP/IMPL_LocalLAPTOP/LocalLAPTOP/D_FAULT_BrowseDatabasePage14,//IMPL_LocalLAPTOP/IMPL_LocalLAPTOP/LocalLAPTOP/D_FAULT_BrowseDatabasePage14 (Parameter 'uri')

you have two things registered to "MainPage" https://github.com/sinsedrix/MauiTests/blob/main/Modal/MauiProgram.cs#L22 https://github.com/sinsedrix/MauiTests/blob/main/Modal/AppShell.xaml#L13

Could you check it?

I run into the same issue if I navigate to a page using Application.Current.MainPage.Navigation.PushAsync(page); and then call await Shell.Current.Navigation.PopAsync(); trying to go back. This page is not registered in my AppShell.xaml because I don't want it showing up in the main navigation. If I register the route and set IsVisible to false, it can't find the route and crashes.