在WPF中正确设置虚拟化ListBox上的宽度

我有一个
WPF列表框,它使用大量行进行虚拟化.当我滚动实体时,列表框的大小会发生变化.我试过了:

<Setter Property="MinWidth" Value="{Binding Path=ExtentWidth, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type ScrollViewer}}}" />

可悲的是,我没有足够的声誉来发布我的问题图片,但基本上当我滚动浏览虚拟列表框时,框的宽度会随着遇到更长的项目而改变.我想我可以尝试测量代码隐藏中最长的字符串并将宽度设置为该值,但我希望有一个更清晰的解决方案.

这是我当前的控制模板(没有骰子):

        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type ListBoxItem}">
                    <Border x:Name="ListItemContainer"
                             MinWidth="{Binding Path=ExtentWidth, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type ScrollViewer}}}"
                            BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Padding="{TemplateBinding Padding}" SnapsToDevicePixels="true">
                        <ContentPresenter></ContentPresenter>                                               
                    </Border>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsSelected" Value="true">                            
                            <Setter Property="Background" TargetName="ListItemContainer" Value="{DynamicResource AxisValueSelectedBackground}"/>
                            <Setter Property="Foreground" Value="{DynamicResource AxisValueSelectedForeground}"/>
                        </Trigger>

                        <Trigger Property="IsSelected" Value="false">
                            <Setter Property="Background" TargetName="ListItemContainer" Value="{DynamicResource AxisValueBackground}"/>
                            <Setter Property="Foreground" Value="{Binding IsEnabled, Converter={StaticResource AxisValueForegroundConverter}}" />
                            <Setter Property="FontStyle" Value="{Binding IsEnabled, Converter={StaticResource AxisValueFontStyleConverter}}" />
                        </Trigger>

                        <MultiDataTrigger>
                            <MultiDataTrigger.Conditions>
                                <Condition Binding="{Binding IsAxisSelected}" Value="True"/>
                                <Condition Binding="{Binding IsAxisValueSelected}" Value="False"/>
                            </MultiDataTrigger.Conditions>
                            <Setter Property="Background" TargetName="ListItemContainer" Value="White" />
                        </MultiDataTrigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>

最佳答案 尝试相同的相对绑定技巧,但在DataTemplate的最外层项(可能是Grid)中.这样项目的大小都相同.

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