ProgressBar track height is not overridable

[AndrewKeepCoding]

Describe the bug

The ProgressBar track height is not overridable.
For example, the code below should render a ProgresBar with a track that fills (or almost fills) the green border,

<Grid>
    <Grid.Resources>
        <x:Double x:Key="ProgressBarTrackHeight">50</x:Double>
    </Grid.Resources>
    <ProgressBar
        Height="50"
        BorderBrush="LightGreen"
        BorderThickness="1"
        Maximum="100"
        Value="70" />
</Grid>

but renders this instead:

Steps to reproduce the bug

Use the code above.

Expected behavior

ProgressBarTrackHeight should be applied to the track height.

Screenshots

No response

NuGet package version

WinUI 3 - Windows App SDK 1.4.2: 1.4.231008000

Windows version

No response

Additional context

This issue was supposed to be fixed by #6061.

[AndrewKeepCoding]

For those who needs a quick workaround until this issue gets fixed, something like this seems to work so far:

public class CustomProgressBar : ProgressBar
{
    private long _heightPropertyChangedCallBackToken;

    public CustomProgressBar () : base()
    {
        Loaded += OnLoaded;
        Unloaded += OnUnloaded;
    }

    private void OnLoaded(object sender, RoutedEventArgs e)
    {
        _heightPropertyChangedCallBackToken = RegisterPropertyChangedCallback(HeightProperty, OnHeightPropertyChanged);
        ApplyHeight();
    }

    private void OnUnloaded(object sender, RoutedEventArgs e)
    {
        UnregisterPropertyChangedCallback(HeightProperty, _heightPropertyChangedCallBackToken);
    }

    private void ApplyHeight()
    {
        // FindDescendants() is from the CommunityToolkit.WinUI.Extensions NuGet package.
        foreach (FrameworkElement element in this.FindDescendants()
            .OfType<FrameworkElement>()
            .Where(x => x is Grid or Rectangle))
        {
            element.Height = Height;
        }
    }

    private void OnHeightPropertyChanged(DependencyObject sender, DependencyProperty dp)
    {
        ApplyHeight();
    }
}

[castorix]

If I add MinHeight ="50", I get (with 1.4.230822000 version) :

[AndrewKeepCoding]

That's way simple if you won't change the Height dynamically.

So, we can do:

<Grid>
    <Grid.Resources>
        <x:Double x:Key="ProgressBarTrackHeight">50</x:Double>
    </Grid.Resources>
    <ProgressBar
        MinHeight="{StaticResource ProgressBarTrackHeight}"
        Maximum="100"
        Value="70" />
</Grid>

Thanks!

[gegao18]

Thanks for reporting this. Closing issue now that there's a MinHeight workaround.