如何阻止点击scrollviewer里面的单位内容时，自动滚动

 <Style TargetType="{x:Type ListBoxItem}">
 <Setter Property="FocusVisualStyle" Value="{x:Null}" />
 <Setter Property="Background" Value="Transparent" />
 <EventSetter Event="RequestBringIntoView" Handler="OnRequestBringIntoView" />//这句话起作用
 <Setter Property="Template">
 <Setter.Value>
 <ControlTemplate TargetType="{x:Type ListBoxItem}">

 <ContentPresenter HorizontalAlignment="Stretch"
 VerticalAlignment="Stretch"
 SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
 </ControlTemplate>
 </Setter.Value>
 </Setter>
 </Style>

 //cs代码
 private void OnRequestBringIntoView(object sender, RequestBringIntoViewEventArgs e)
         {
             e.Handled = true;
         }