[TreeView子集合在属性更改时自动排序

Question

我想对TreeView的第二级进行排序。排序取决于两个不同的条件，具体取决于FieldType和Order属性。在我的情况下，用户可能增加或减少订单。用户使用向上和向下箭头按钮。如果添加或删除了项目，并且用户更改了Order属性，如何保留列表分类表？

我当前的TreeView：

<TreeView Grid.Row="0" x:Name="tvImages" ItemsSource="{Binding SelectedTemplate.Images}">
        <TreeView.Resources>
            <HierarchicalDataTemplate DataType="{x:Type entities:TemplateImageDTO}" ItemsSource="{Binding FieldSections}">
                <StackPanel Orientation="Horizontal">
                    <TextBlock Text="{Binding Order, StringFormat=Image {0}}" Margin="0,3,0,0"/>
                </StackPanel>
            </HierarchicalDataTemplate>
            <HierarchicalDataTemplate DataType="{x:Type entities:FieldSectionDTO}">
                <DockPanel LastChildFill="False" HorizontalAlignment="Stretch" Width="Auto">
                    <StackPanel DockPanel.Dock="Left" Orientation="Horizontal">
                        <TextBlock Text="{Binding FieldType, Converter={StaticResource enumConverter}}" Margin="0,3,0,0" />
                        <TextBlock Text=" - Field " Margin="0,3,0,0" />
                        <TextBlock Text="{Binding Order, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" Margin="0,3,0,0" />
                    </StackPanel>
                    <StackPanel Orientation="Horizontal" DockPanel.Dock="Right" Margin="0,0,10,0">
                        <Button Width="24" Height="24" Style="{DynamicResource MahApps.Metro.Styles.MetroCircleButtonStyle}">
                            <iconPacks:PackIconFontAwesome Kind="AngleUpSolid" Foreground="{DynamicResource AccentColorBrush}" />
                        </Button>
                        <Button Width="24" Height="24" Margin="10,0,0,0" Style="{DynamicResource MahApps.Metro.Styles.MetroCircleButtonStyle}">
                            <iconPacks:PackIconFontAwesome Kind="AngleDownSolid" Foreground="{DynamicResource AccentColorBrush}" />
                        </Button>
                    </StackPanel>
                </DockPanel>
            </HierarchicalDataTemplate>
        </TreeView.Resources>
    </TreeView>

Answer 1

我在这里找到我的解决方案：https://stackoverflow.com/a/19363888/6751312

在用户单击向上和向下箭头之后，我增加和减少了order属性并重新排序列表。