WPF Stretch ListBox高度100%的Grid.Row？

Question

我试图拉伸ListBox父网格高度的100%的高度(即父视图高度的90%); 即使listboxes是空的.我应该注意到它VerticalAlignment="Stretch"似乎不起作用,所以我已经从ListBox和StackPanel元素中删除了它.截至目前,ListBox为了容纳它所包含的项目数量,它只需要延伸.我知道行定义应该可以工作,但如果两个列表都是空的,它们都会缩小到几个像素高(与网格行一起).尽管有明确的高度声明,但有些东西会导致这些行缩小吗？

<Grid.ColumnDefinitions>
        <ColumnDefinition Width=".24*"/>
        <ColumnDefinition Width=".73*"/>
    </Grid.ColumnDefinitions>
    <Grid.RowDefinitions>
        <RowDefinition Height=".9*"/>
        <RowDefinition Height=".1*"/>
    </Grid.RowDefinitions>
    <ListBox Grid.Column="0" Grid.Row="0" Name="Subdivisions" SelectedItem="{Binding SelectedSubdivisionViewModel}" ItemsSource="{Binding Path=Subdivisions}" Grid.IsSharedSizeScope="True">
        <ListBox.ItemTemplate>
            <DataTemplate>
                <StackPanel>
                    <Border BorderBrush="#FF4788c8" BorderThickness="1,1,1,1" CornerRadius="8,8,8,8">
                        <Expander IsExpanded="{Binding IsSelected, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type ListBoxItem}}}">
                            <Expander.Header>
                                <StackPanel>
                                    <Grid>
                                        <Grid.ColumnDefinitions>
                                            <ColumnDefinition Width="*" SharedSizeGroup="col1" />
                                            <ColumnDefinition Width=".1*" SharedSizeGroup="col2" />
                                            <ColumnDefinition Width="*" SharedSizeGroup="col3" />
                                        </Grid.ColumnDefinitions>
                                        <Grid.RowDefinitions>
                                            <RowDefinition/>
                                            <RowDefinition/>
                                        </Grid.RowDefinitions>
                                        <TextBlock Grid.Column="0" Grid.Row="0">
                                            <TextBlock.Text>
                                                <MultiBinding StringFormat="Name: {0}">
                                                  <Binding Path="SubdivisionName" />
                                                  <Binding Path="SubdivisionID" />
                                                </MultiBinding>
                                            </TextBlock.Text>
                                        </TextBlock>
                                        <TextBlock Grid.Column="2" Grid.Row="0">
                                            <TextBlock.Text>
                                                <MultiBinding StringFormat="ID: {0}">
                                                  <Binding Path="SubdivisionName" />
                                                  <Binding Path="SubdivisionID" />
                                                </MultiBinding>
                                            </TextBlock.Text>
                                        </TextBlock>
                                        <TextBlock Grid.Column="2" Grid.Row="1">
                                            <TextBlock.Text>
                                                <MultiBinding StringFormat="ID: {0}">
                                                  <Binding Path="SubdivisionName" />
                                                  <Binding Path="SubdivisionID" />
                                                </MultiBinding>
                                            </TextBlock.Text>
                                        </TextBlock>
                                    </Grid>
                                </StackPanel>
                            </Expander.Header>
                            <StackPanel>
                                <Grid>
                                    <Grid.ColumnDefinitions>
                                        <ColumnDefinition Width="*"/>
                                        <ColumnDefinition/>
                                        <ColumnDefinition/>
                                    </Grid.ColumnDefinitions>
                                    <Grid.RowDefinitions>
                                        <RowDefinition />
                                        <RowDefinition />
                                    </Grid.RowDefinitions>
                                    <TextBlock Text="{Binding ElementName=SubdivisionID}" />
                                    <TextBlock Text="{Binding Path=SubdivisionID}" />
                                </Grid>
                            </StackPanel>
                        </Expander>
                    </Border>
                </StackPanel>
            </DataTemplate>
        </ListBox.ItemTemplate>
    </ListBox>

Answer 1

通过下面的XAML 将ListBoxheight属性绑定到ActualHeightLayoutRoot Grid,我能够达到所需的高度:

<Grid x:Name="LayoutRoot" Background="LightGray">
    <Grid.ColumnDefinitions>
        <ColumnDefinition Width=".24*"/>
        <ColumnDefinition Width=".73*"/>
    </Grid.ColumnDefinitions>
    <Grid.RowDefinitions>
        <RowDefinition Height=".9*"/>
        <RowDefinition Height=".1*"/>
    </Grid.RowDefinitions>
    <ListBox Name="Subdivisions" SelectedItem="{Binding SelectedSubdivisionViewModel}" ItemsSource="{Binding Path=Subdivisions}" Grid.IsSharedSizeScope="True" Height="{Binding ElementName=LayoutRoot, Path=ActualHeight}" >

重要的是:

Height="{Binding ElementName=LayoutRoot, Path=ActualHeight}"

也可以通过祖先类型实现:

Height="{Binding Path=ActualHeight, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Grid}}}"

Answer 2

stackpanels使它压缩.取下它,它将填满整个高度