我有一个列表视图控件与分组和排序.
组标题是按降序排列的日期.
我试图找出如何按升序排序每个组头下的分组项目,但无法弄清楚如何完成它或者甚至可以使用ListView.
这是我到目前为止的XAML.
注意：ScheduledItemSearchResults是一个可观察的ScheduleItem集合,每个项目都有Title和ScheduleDate属性.
<Grid x:Name="TxScheduleItemResults"
Grid.Column="1">
<Grid.Resources>
<CollectionViewSource Source="{Binding ScheduledItemSearchResults}" x:Key="scheduledItems">
<CollectionViewSource.sortDescriptions>
<scm:SortDescription PropertyName="Value.ScheduleDateTime" Direction="Descending"/>
</CollectionViewSource.sortDescriptions>
<CollectionViewSource.GroupDescriptions>
<dat:PropertyGroupDescription PropertyName="Value.ScheduleDateTime.Date" />
</CollectionViewSource.GroupDescriptions>
</CollectionViewSource>
</Grid.Resources>
<ListView x:Name="ScheduledItemResultsList"
Style="{StaticResource TransparentListViewStyle}"
ItemContainerStyle="{StaticResource alternatingListViewItemStyle}"
AlternationCount="2"
ItemsSource="{Binding Source={StaticResource scheduledItems}}"
>
<ListView.View>
<GridView>
<GridViewColumn Header="Scheduled Items"
Width="{Binding ElementName=ScheduledItemResultsList,Path=ActualWidth}"
>
<GridViewColumn.HeaderTemplate>
<DataTemplate>
<TextBlock Style="{StaticResource ModuleGroupHeader}"
Text="{Binding}"
/>
</DataTemplate>
</GridViewColumn.HeaderTemplate>
<GridViewColumn.CellTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBox Text="{Binding Value.Title}" Width="200"/>
<TextBox Text="{Binding Value.ScheduleDateTime,StringFormat={}{0:HH:mm:ss}}" Width="120"/>
</StackPanel>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
</GridView>
</ListView.View>
<ListView.GroupStyle>
<GroupStyle>
<GroupStyle.ContainerStyle>
<Style targettype="{x:Type GroupItem}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate>
<Expander IsExpanded="True">
<Expander.Header>
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding Path=Items[0].Value.ScheduleDateTime.Date,StringFormat={}{0:dd/MM/yyyy}}" FontWeight="Bold" Foreground="Gray" FontSize="22" VerticalAlignment="Bottom" />
<TextBlock Text="{Binding ItemCount}" FontSize="22" Foreground="Green" FontWeight="Bold" FontStyle="Italic" Margin="10,0" VerticalAlignment="Bottom" />
<TextBlock Text=" item(s)" FontSize="22" Foreground="Silver" FontStyle="Italic" VerticalAlignment="Bottom" />
</StackPanel>
</Expander.Header>
<ItemsPresenter />
</Expander>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</GroupStyle.ContainerStyle>
</GroupStyle>
</ListView.GroupStyle>
</ListView>
</Grid>
解决方法
您可以在一个CollectionViewSource中包含多个SortDescriptions元素：
<CollectionViewSource Source="{Binding ScheduledItemSearchResults}" x:Key="scheduledItems">
<CollectionViewSource.sortDescriptions>
<!--This will sort groups-->
<scm:SortDescription PropertyName="Value.ScheduleDateTime.Date" />
<!--This will items-->
<scm:SortDescription PropertyName="Value.ScheduleDateTime" Direction="Descending"/>
</CollectionViewSource.sortDescriptions>
<CollectionViewSource.GroupDescriptions>
<dat:PropertyGroupDescription PropertyName="Value.ScheduleDateTime.Date" />
</CollectionViewSource.GroupDescriptions>
</CollectionViewSource>
附：我不知道你究竟想要对它进行排序,但是如果你对第一组进行排序,然后对项目进行排序则应该有效.