how can we highlight navigation view item when selected with button in winui3

Hello,

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You could try to override the corresponding theme resource for the item selected status.

Like this:

        <NavigationView x:Name="NavigationViewControl" >  
            <NavigationView.Resources>  
                <SolidColorBrush x:Key="NavigationViewItemBackgroundSelected" Color="Yellow"/>  
            </NavigationView.Resources>  
            <NavigationView.MenuItems>  
                <NavigationViewItem Content="A" x:Name="A" />  
                <NavigationViewItem Content="B" x:Name="B" />  
                <NavigationViewItem Content="C" x:Name="C" />  
            </NavigationView.MenuItems>  
        </NavigationView>  

Thank you.

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