UWP Vertical ScrollBar doesn't show up

Question

I have a grid which contains several rows. In every row ther's some information. When clicking on a button on row=1 it expands and the lower part in my app is collapsed. I tried to add a scrollviewer but still it is not shown. Here is my part of code where I add the scrollbar:

<Grid Background="LightSalmon" ScrollViewer.VerticalScrollBarVisibility="Visible"
      ScrollViewer.IsVerticalRailEnabled="True"
      ScrollViewer.VerticalScrollMode="Enabled">



    <Grid.RowDefinitions>
        <RowDefinition Height="auto"/>
        <RowDefinition Height="auto"/>
        <RowDefinition Height="auto"/>
        <RowDefinition Height="auto"/>
        <RowDefinition Height="auto"/>
        <RowDefinition Height="auto"/>
    </Grid.RowDefinitions>



</Grid>

Answer 1

The Grid does not scroll on its own, no matter what ScrollViewer attached properties you use. Remove all the ScrollViewer attached properties and put the Grid into a ScrollViewer .