Navigation View resize if collapse

[APerricone]

Hi, I am trying to replicate the behavior we can see on WinUI sample app:

As we can see when the WinUI collapse the content resize, instead in my application when it collapse a there is a blank space. Is it a known bug or I am missing something?

[APerricone]

Hello, I saw my error, my old code was:

    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="auto" />
            <ColumnDefinition Width="*" />
        </Grid.ColumnDefinitions>
        <ui:NavigationView PaneDisplayMode="Left">
            <ui:NavigationView.MenuItems>
                <ui:NavigationViewItem Icon="Play" Content="Menu Item1" Tag="SamplePage1" />
                <ui:NavigationViewItem Icon="Save" Content="Menu Item2" Tag="SamplePage2" />
                <ui:NavigationViewItem Icon="Refresh" Content="Menu Item3" Tag="SamplePage3" />
                <ui:NavigationViewItem Icon="Download" Content="Menu Item4" Tag="SamplePage4" />
            </ui:NavigationView.MenuItems>
        </ui:NavigationView>
        <Grid Grid.Column="1">
            <!-- my content -->

instead the correct code is

    <ui:NavigationView PaneDisplayMode="Left">
        <ui:NavigationView.MenuItems>
            <ui:NavigationViewItem Icon="Play" Content="Menu Item1" Tag="SamplePage1" />
            <ui:NavigationViewItem Icon="Save" Content="Menu Item2" Tag="SamplePage2" />
            <ui:NavigationViewItem Icon="Refresh" Content="Menu Item3" Tag="SamplePage3" />
            <ui:NavigationViewItem Icon="Download" Content="Menu Item4" Tag="SamplePage4" />
        </ui:NavigationView.MenuItems>
        <Grid>
            <!-- my content -->

simpler and working 😅