C＃WPF：通過將高度屬性設置為“自動”的ListView中的水平滾動條防止最后一項覆蓋

Question

我在StackPanel中有一個WPF ListView，高度為“ Auto”。 可以實現我想要的很棒–根據ListView中包含的所有項目更改高度。 我的ListView上也有Horizo​​ntalScrollBarVisiblity =“ Auto”，這很適合我的需求。

當我的ListView的列的整個寬度大於ListView控件的寬度（即，用戶減小窗口和此控件的寬度）時，就會出現問題。 在那種情況下，顯然會出現水平滾動條-沒關系。 問題在於此滾動條覆蓋了ListView項的最后一個（底部）項，因此部分不可見。

垂直滾動條沒有出現，這沒關系-我不想要它。 我只是想正確計算我的ListView高度，所以它考慮顯示的水平滾動條的高度並將其包括在計算中，這樣所有項目都是可見的。

XAML代碼示例：

<ListView Name="lvProcedures" ItemsSource="{Binding Path=Procedures}" SelectionMode="Single">
 <ListView.View>
     <GridView AllowsColumnReorder="False" ColumnHeaderToolTip="Lista zabiegów">
         <GridViewColumn DisplayMemberBinding="{Binding Path=procedure}" Header="A" Width="150" />
         <GridViewColumn DisplayMemberBinding="{Binding Path=location}" Header="B" Width="100" />
         <GridViewColumn DisplayMemberBinding="{Binding Path=material}" Header="C" Width="180" />
         <GridViewColumn DisplayMemberBinding="{Binding Path=other}" Header="D" Width="180" />
         <GridViewColumn DisplayMemberBinding="{Binding Path=description}" Header="E" Width="400" />
     </GridView>
  </ListView.View>
</ListView>

我現在一直堅持創建覆蓋MeasureOverride的用戶控件（也許只是ListView的derieved類？）的想法，但是我認為這不是解決這么小的但令人討厭的“ bug”的好方法，而且仍然給我帶來麻煩實施解決方案。

有人可以為這個問題提供一些優雅的解決方案嗎？ 任何想法將不勝感激。

Answer 1

@bartivo：我得到的結果與您不同-底部的水平滾動條似乎不會遮擋最低的項目。 我想知道您是否對ListView和ScrollViewer使用自定義ControlTemplate，b / c默認ScrollViewer模板在第一行（Height =“ *”）中有兩行ScrollContentPresenter，在第二行（Height = “自動”），從而確保一個不會與另一個重疊。

也許您可以嘗試將這些樣式用於ListView和ScrollViewer，看看是否仍然出現此問題：

        <SolidColorBrush x:Key="ListBorder" Color="#828790"/>
    <Style x:Key="{x:Static GridView.GridViewScrollViewerStyleKey}" TargetType="{x:Type ScrollViewer}">
        <Setter Property="Focusable" Value="false"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type ScrollViewer}">
                    <Grid SnapsToDevicePixels="true" Background="{TemplateBinding Background}">
                        <Grid.ColumnDefinitions>
                            <ColumnDefinition Width="*"/>
                            <ColumnDefinition Width="Auto"/>
                        </Grid.ColumnDefinitions>
                        <Grid.RowDefinitions>
                            <RowDefinition Height="*"/>
                            <RowDefinition Height="Auto"/>
                        </Grid.RowDefinitions>
                        <DockPanel Margin="{TemplateBinding Padding}">
                            <ScrollViewer Focusable="false" HorizontalScrollBarVisibility="Hidden" VerticalScrollBarVisibility="Hidden" DockPanel.Dock="Top">
                                <GridViewHeaderRowPresenter Margin="2,0,2,0" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" AllowsColumnReorder="{Binding TemplatedParent.View.AllowsColumnReorder, RelativeSource={RelativeSource TemplatedParent}}" ColumnHeaderContainerStyle="{Binding TemplatedParent.View.ColumnHeaderContainerStyle, RelativeSource={RelativeSource TemplatedParent}}" ColumnHeaderContextMenu="{Binding TemplatedParent.View.ColumnHeaderContextMenu, RelativeSource={RelativeSource TemplatedParent}}" ColumnHeaderStringFormat="{Binding TemplatedParent.View.ColumnHeaderStringFormat, RelativeSource={RelativeSource TemplatedParent}}" ColumnHeaderTemplate="{Binding TemplatedParent.View.ColumnHeaderTemplate, RelativeSource={RelativeSource TemplatedParent}}" ColumnHeaderTemplateSelector="{Binding TemplatedParent.View.ColumnHeaderTemplateSelector, RelativeSource={RelativeSource TemplatedParent}}" ColumnHeaderToolTip="{Binding TemplatedParent.View.ColumnHeaderToolTip, RelativeSource={RelativeSource TemplatedParent}}" Columns="{Binding TemplatedParent.View.Columns, RelativeSource={RelativeSource TemplatedParent}}"/>
                            </ScrollViewer>
                            <ScrollContentPresenter x:Name="PART_ScrollContentPresenter" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" KeyboardNavigation.DirectionalNavigation="Local" Content="{TemplateBinding Content}" ContentTemplate="{TemplateBinding ContentTemplate}" CanContentScroll="{TemplateBinding CanContentScroll}"/>
                        </DockPanel>
                        <ScrollBar x:Name="PART_HorizontalScrollBar" Cursor="Arrow" Visibility="{TemplateBinding ComputedHorizontalScrollBarVisibility}" Grid.Row="1" Maximum="{TemplateBinding ScrollableWidth}" Minimum="0.0" Value="{Binding HorizontalOffset, Mode=OneWay, RelativeSource={RelativeSource TemplatedParent}}" Orientation="Horizontal" ViewportSize="{TemplateBinding ViewportWidth}"/>
                        <ScrollBar x:Name="PART_VerticalScrollBar" Cursor="Arrow" Visibility="{TemplateBinding ComputedVerticalScrollBarVisibility}" Grid.Column="1" Maximum="{TemplateBinding ScrollableHeight}" Minimum="0.0" Value="{Binding VerticalOffset, Mode=OneWay, RelativeSource={RelativeSource TemplatedParent}}" Orientation="Vertical" ViewportSize="{TemplateBinding ViewportHeight}"/>
                        <DockPanel Background="{Binding Background, ElementName=PART_VerticalScrollBar}" Grid.Column="1" Grid.Row="1" LastChildFill="false">
                            <Rectangle Fill="White" Width="1" Visibility="{TemplateBinding ComputedVerticalScrollBarVisibility}" DockPanel.Dock="Left"/>
                            <Rectangle Fill="White" Height="1" Visibility="{TemplateBinding ComputedHorizontalScrollBarVisibility}" DockPanel.Dock="Top"/>
                        </DockPanel>
                    </Grid>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
    <Style x:Key="ListViewStyle1" TargetType="{x:Type ListView}">
        <Setter Property="Background" Value="{DynamicResource {x:Static SystemColors.WindowBrushKey}}"/>
        <Setter Property="BorderBrush" Value="{StaticResource ListBorder}"/>
        <Setter Property="BorderThickness" Value="1"/>
        <Setter Property="Foreground" Value="#FF042271"/>
        <Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Auto"/>
        <Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Auto"/>
        <Setter Property="ScrollViewer.CanContentScroll" Value="true"/>
        <Setter Property="VerticalContentAlignment" Value="Center"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type ListView}">
                    <Microsoft_Windows_Themes:ListBoxChrome x:Name="Bd" SnapsToDevicePixels="true" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" RenderFocused="{TemplateBinding IsKeyboardFocusWithin}" RenderMouseOver="{TemplateBinding IsMouseOver}">
                        <ScrollViewer Style="{DynamicResource {x:Static GridView.GridViewScrollViewerStyleKey}}" Padding="{TemplateBinding Padding}">
                            <ItemsPresenter SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
                        </ScrollViewer>
                    </Microsoft_Windows_Themes:ListBoxChrome>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsGrouping" Value="true">
                            <Setter Property="ScrollViewer.CanContentScroll" Value="false"/>
                        </Trigger>
                        <Trigger Property="IsEnabled" Value="false">
                            <Setter Property="Background" TargetName="Bd" Value="{DynamicResource {x:Static SystemColors.ControlBrushKey}}"/>
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>