我有一个具有分组和排序功能的列表视图控件。
组标题是按降序排列的日期。
我正试图找出如何按升序排列每个组标题下的分组项目,但我不知道如何完成,也不知道ListView是否可以。
这是我迄今为止拥有的XAML。
注意:ScheduledItemSearchResults是ScheduleItems的可观察集合,每个项都有一个Title和一个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="10,0,0,0" 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>
在一个CollectionViewSource
:中可以有多个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>
附言:我不太明白你到底想怎么排序,但如果你先排序组,然后排序项目,它应该会起作用。