If the NavigationView's SelectedItem is set after having set the ItemsSource the NavigationViewItem is not selected.

[Suriman]

Describe the bug

When setting the SelectedItem of a NavigationView after having set the ItemsSource, the NavigationViewItem which has to be selected doesn't select.

Steps to reproduce the bug

1 - Open the attached sample and compile it.
2 - Execute the NavigationViewSelectionDisappears.Windows project as Package.
3 - You'll see that the NavigationViewItem is not selected.

Expected behavior

The NavigationViewItem has to be selected.

Screenshots

No response

NuGet package version

None

Windows version

No response

Additional context

[Suriman]

NavigationViewItemIsSelectedValue.zip

[github-actions]

Hi I'm an AI powered bot that finds similar issues based off the issue title.

Please view the issues below to see if they solve your problem, and if the issue describes your problem please consider closing this one. Thank you!

Open similar issues:

• NavigationView Selection not cleared while setting SelectedItem property as null (#8266), similarity score: 0.80
• NavigationView does not update selection indicator correctly when ItemsSources change (#7216), similarity score: 0.79
• NavigationViewItem.SelectsOnInvoked with false value has unexpected behavior (#6511), similarity score: 0.78

Closed similar issues:

• Lose NavigationViewItem selection after setting an item property (#6712), similarity score: 0.83
• Question: Why MenuItems does not found on NavigationViewItem (#4890), similarity score: 0.78

Note: You can give me feedback by thumbs upping or thumbs downing this comment.

[kmgallahan]

IMO, you should provide a minimal repro sample rather than a large multi-platform project with many extraneous references.

~I couldn't run it unless I installed things I have no use for.

[Suriman]

@kmgallahan, I attach the solution with the Windows target framework only.
NavigationViewItemIsSelectedValueWindowsOnly.zip

[kmgallahan]

This is not a minimal repro:

    <PackageReference Include="Uno.Resizetizer" Version="1.2.1" />
    <PackageReference Include="Uno.WinUI" Version="5.0.48" />
    <PackageReference Include="Microsoft.WindowsAppSDK" Version="1.4.231008000" />
    <PackageReference Include="Microsoft.Windows.SDK.BuildTools" Version="10.0.22621.756" />
    <PackageReference Include="CommunityToolkit.Mvvm" Version="8.2.1" />
    <PackageReference Include="Uno.Material.WinUI" Version="4.0.6" />
    <PackageReference Include="Microsoft.Extensions.Logging.Console" Version="7.0.0" />
    <PackageReference Include="Uno.Core.Extensions.Logging.Singleton" Version="4.0.1" />
    <PackageReference Include="Uno.UI.Adapter.Microsoft.Extensions.Logging" Version="5.0.48" />
    <PackageReference Include ="Prism.Core" Version="8.1.97"/>

This is a minimal repro from making a new app from the standard template and copying over bits of your code:

https://github.com/kmgallahan/NavSelectedItemSample

and it shows the NavigationView working as expected.

You should start eliminating or adding dependencies and complications in a test project until you find what is causing your problem.

Edit: I'm guessing it a problem with the uno skin / style implementation.

[gegao18]

Thanks for reporting this @Suriman, and thanks @kmgallahan for investigating. I'm closing this for now since it seems to be an external issue. Please reopen if you've identified the problem to be something on WinUI 3.