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>