Why doesn't keyboard input work for a ScrollViewer when the child control has input focus?
- by Ashley Davis
Why doesn't keyboard input work for a ScrollViewer when the child control has input focus?
This is the scenario. A WPF window opens. It sets the focus to a control that is embedded in a ScrollViewer.
I hit the up and down and left and right keys. The ScrollViewer doesn't seem to handle the key events, anyone know why?
This is the simplest possible example:
<Window x:Class="WpfApplication1.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Window1" Height="300" Width="300"
FocusManager.FocusedElement="{Binding ElementName=control}"
>
<Grid>
<ScrollViewer
HorizontalScrollBarVisibility="Auto"
>
<ItemsControl
x:Name="control"
Width="1000"
Height="1000"
/>
</ScrollViewer>
</Grid>
</Window>
When you start the app that contains this window, "control" appears to have the focus as I intended. Pressing the key seems to result in bubbling key events reaching the ScrollViewer (I checked for this using WPF Snoop). I can't work out why it doesn't respond to the input.
