带水平滚动条的列表框

Question

我有一个填充usercontrols的列表框.当我填充列表框时,我会得到一个垂直滚动条,但我也会在列表框中获得一个不受欢迎的水平滚动条.我试图为listboxitem创建一个转换器,但从不调用转换器.

     <ListBox.Resources>
                <local:ControlWidthConverter x:Key="widthConverter" />
            </ListBox.Resources>
            <ListBox.ItemTemplate>
                <DataTemplate>

                    <!--Manages click on child controls so listitem is selected-->
                    <Controls:ComponentEditItem   HorizontalAlignment="Left"
                        Width="{Binding RelativeSource={RelativeSource AncestorType={x:Type ListBox}},
Path=ActualWidth, Converter={StaticResource widthConverter}}">

                        <Controls:ComponentEditItem.Triggers>
                            <EventTrigger RoutedEvent="GotFocus">
                                <BeginStoryboard>
                                    <Storyboard>
                                        <BooleanAnimationUsingKeyFrames Duration="00:00:00" Storyboard.Target="{Binding Path=., RelativeSource={RelativeSource FindAncestor, AncestorType=ListBoxItem}}" Storyboard.TargetProperty="IsSelected">
                                            <DiscreteBooleanKeyFrame Value="True" />
                                        </BooleanAnimationUsingKeyFrames>
                                    </Storyboard>
                                </BeginStoryboard>
                            </EventTrigger>
                        </Controls:ComponentEditItem.Triggers>
                    </Controls:ComponentEditItem>

                </DataTemplate>
            </ListBox.ItemTemplate>

            <ListBox.ItemsPanel>
                <ItemsPanelTemplate>
                    <VirtualizingStackPanel Orientation="Horizontal" />
                </ItemsPanelTemplate>
            </ListBox.ItemsPanel>

转换器

   public class ControlWidthConverter : IValueConverter
    {

        #region IValueConverter Members

        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            double result = (double)value;

            if (!Double.IsNaN(result))
            {
                result = result - 20;
            }
            else
            {
                result = 100D;
            }

            return result;
        }

        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            throw new System.NotImplementedException("Not implemented.");
        }

        #endregion
    } 

任何人都知道为什么不调用转换器.或者如何删除水平滚动条

Answer 1

这有用吗？

<ListBox ScrollViewer.HorizontalScrollBarVisibility="Hidden"/>