The ScrollViewer does not scroll
问题 I would like to have an interface with 3 components one next to the other. The first would be a ListView and the two others being Grids. Since the components will overflow on the right, I want to put them in a ScrollViewer. I did not succeed. I tried to do a really simple example to try, but even the example fails. <ScrollViewer Grid.Column="1" Grid.Row="2" HorizontalAlignment="Left" VerticalAlignment="Top" Width="600" Height="400"> <StackPanel Width="1200" Height="400" Orientation=