When I use the following xaml in Silverlight 4, the ScrollViewer will not recognize the mouse wheel unless I click once on the scroll bar thumb, and keep the mouse over the scroll bar, while turning the mouse wheel.
<Grid x:Name="LayoutRoot" Background="White">
<ScrollViewer>
<StackPanel Name="stackPanel1">
<Button Content="Button 1" Width="150" />
<Button Content="Button 2" Width="150" Margin="0,20,0,0" />
<Button Content="Button 3" Width="150" Margin="0,20,0,0" />
<Button Content="Button 4" Width="150" Margin="0,20,0,0" />
<Button Content="Button 5" Width="150" Margin="0,20,0,0" />
<Button Content="Button 6" Width="150" Margin="0,20,0,0" />
<Button Content="Button 7" Width="150" Margin="0,20,0,0" />
</StackPanel>
</ScrollViewer>
</Grid>
Has anyone else experience this, and is there any work around?