C# ScrollView内部的StackPanel无法正确地进行物理滚动

考虑以下XAML（用户控件）：

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scrollview和stackpanel的水平偏移仍然为零！此外，stackpanel的ScrollOwner为空。有什么想法吗？

因为您没有指定ScrollViewer的宽度，所以它采用StackPanel的大小。因为ScrollViewer的内容不大于其大小，所以它不会滚动，并且水平偏移量始终为0。尝试将ScrollViewer的宽度设置为小于其内容的宽度，您应该可以使用水平滚动

此外，还可以删除禁用垂直滚动条的所有冗余，一次就足够了

<Grid x:Name="LayoutRoot">
<Grid HorizontalAlignment="Right" Width="335.312">
    <ed:BlockArrow Fill="#FFF4F4F5" HorizontalAlignment="Left" Margin="0" 
         Orientation="Left" Stroke="Black" Width="15" RenderTransformOrigin="5.6,-0.412"
         Height="12" VerticalAlignment="Center" MouseEnter="LeftArrow_MouseEnter" 
         MouseLeave="LeftArrow_MouseLeave" MouseLeftButtonUp="LeftArrow_MouseLeftButtonUp"/>
    <ed:BlockArrow Fill="#FFF4F4F5" Stroke="Black" RenderTransformOrigin="5.6,-0.412" 
         Height="12" VerticalAlignment="Center" MouseEnter="RightArrow_MouseEnter" 
         MouseLeave="RightArrow_MouseLeave" HorizontalAlignment="Right" Width="15" 
         MouseLeftButtonUp="RightArrow_MouseLeftButtonUp"/>
    <ScrollViewer x:Name="panelScrollViewer" Margin="15,0" CanContentScroll="False" 
          VerticalScrollBarVisibility="Disabled" HorizontalScrollBarVisibility="Hidden"
          Width="250">
        <StackPanel x:Name="slidingStackPanel" Orientation="Horizontal" Height="125.882" Width="305.312"/>
    </ScrollViewer>
</Grid>

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由于您没有指定ScrollViewer的宽度，因此它采用StackPanel的大小。因为ScrollViewer的内容不大于其大小，所以它不会滚动，并且水平偏移量始终为0。尝试将ScrollViewer的宽度设置为小于其内容的宽度，您应该可以使用水平滚动

此外，还可以删除禁用垂直滚动条的所有冗余，一次就足够了

<Grid x:Name="LayoutRoot">
<Grid HorizontalAlignment="Right" Width="335.312">
    <ed:BlockArrow Fill="#FFF4F4F5" HorizontalAlignment="Left" Margin="0" 
         Orientation="Left" Stroke="Black" Width="15" RenderTransformOrigin="5.6,-0.412"
         Height="12" VerticalAlignment="Center" MouseEnter="LeftArrow_MouseEnter" 
         MouseLeave="LeftArrow_MouseLeave" MouseLeftButtonUp="LeftArrow_MouseLeftButtonUp"/>
    <ed:BlockArrow Fill="#FFF4F4F5" Stroke="Black" RenderTransformOrigin="5.6,-0.412" 
         Height="12" VerticalAlignment="Center" MouseEnter="RightArrow_MouseEnter" 
         MouseLeave="RightArrow_MouseLeave" HorizontalAlignment="Right" Width="15" 
         MouseLeftButtonUp="RightArrow_MouseLeftButtonUp"/>
    <ScrollViewer x:Name="panelScrollViewer" Margin="15,0" CanContentScroll="False" 
          VerticalScrollBarVisibility="Disabled" HorizontalScrollBarVisibility="Hidden"
          Width="250">
        <StackPanel x:Name="slidingStackPanel" Orientation="Horizontal" Height="125.882" Width="305.312"/>
    </ScrollViewer>
</Grid>

<Grid x:Name="LayoutRoot">
<Grid HorizontalAlignment="Right" Width="335.312">
    <ed:BlockArrow Fill="#FFF4F4F5" HorizontalAlignment="Left" Margin="0" 
         Orientation="Left" Stroke="Black" Width="15" RenderTransformOrigin="5.6,-0.412"
         Height="12" VerticalAlignment="Center" MouseEnter="LeftArrow_MouseEnter" 
         MouseLeave="LeftArrow_MouseLeave" MouseLeftButtonUp="LeftArrow_MouseLeftButtonUp"/>
    <ed:BlockArrow Fill="#FFF4F4F5" Stroke="Black" RenderTransformOrigin="5.6,-0.412" 
         Height="12" VerticalAlignment="Center" MouseEnter="RightArrow_MouseEnter" 
         MouseLeave="RightArrow_MouseLeave" HorizontalAlignment="Right" Width="15" 
         MouseLeftButtonUp="RightArrow_MouseLeftButtonUp"/>
    <ScrollViewer x:Name="panelScrollViewer" Margin="15,0" CanContentScroll="False" 
          VerticalScrollBarVisibility="Disabled" HorizontalScrollBarVisibility="Hidden"
          Width="250">
        <StackPanel x:Name="slidingStackPanel" Orientation="Horizontal" Height="125.882" Width="305.312"/>
    </ScrollViewer>
</Grid>