Question

页面显示不同的订单号，每个订单号包含多个订单项，需要总计金额并在组头中显示。请帮助显示每个订单号的总金额。

TotalAmount字段不会与Group标题名称（订单号）一起显示。

 <abcd:DetailsListView x:Name="EncumbranceEntriesList" Grid.Row="1"
            ItemsSource="{Binding CurrentEncumbranceJournalEntries}"
            SelectionMode="Extended" ShowGroupItemCount="True" 
            IsSortingEnabled="False"
            ahtd:ListBoxExtensions.HasBindableSelectedItems="True">
<i:Interaction.Behaviors>
                <b:DetailsListViewStatePersistenceBehavior
                    ListViewState="{e:UISettingBinding EncumbranceJournalTabListViewState}"/>
            </i:Interaction.Behaviors>
            <ListView.ContextMenu>
                <ContextMenu>
                    <ContextMenu.Resources>
                        <Style TargetType="{x:Type Image}" BasedOn="{StaticResource CommandIconStyle}"/>
                    </ContextMenu.Resources>
                    <MenuItem Header="_Refresh" InputGestureText="F5"
                        Command="{StaticResource RefreshCommand}">
                        <MenuItem.Icon>
                            <Image Source="{DynamicResource {local:ThemeResourceKey IconRefresh}}"/>
                        </MenuItem.Icon>
                    </MenuItem>
                </ContextMenu>
            </ListView.ContextMenu>
            <ListView.ItemContainerStyle>
                <Style TargetType="{x:Type ListViewItem}">
                    <Setter Property="HorizontalContentAlignment" Value="Stretch"/>
                    <EventSetter Event="MouseDoubleClick" Handler="ListViewItem_MouseDoubleClick"/>
                    <Setter Property="ContextMenu">
                        <Setter.Value>
                            <ContextMenu>
                                <ContextMenu.Resources>
                                    <Style TargetType="{x:Type Image}" BasedOn="{StaticResource CommandIconStyle}"/>
                                </ContextMenu.Resources>
                                <MenuItem Header="_Open Purchase Order" Command="{StaticResource OpenPOCommand}" CommandParameter="{Binding PurchaseOrderDetail.PurchaseOrder}">
                                    <MenuItem.Icon>
                                        <Image Source="{DynamicResource {local:ThemeResourceKey IconOpen}}"/>
                                    </MenuItem.Icon>
                                </MenuItem>
                            </ContextMenu>
                        </Setter.Value>
                    </Setter>
                </Style>
            </ListView.ItemContainerStyle>
            <ListView.View>
                <abcd:DetailsView>
                    <abcd:DetailsViewColumn Header="PO #" Width="140"
                        IsInitiallyVisible="False" IsUserHidable="False"
                        DisplayMemberBinding="{Binding PurchaseOrderDetail.PurchaseOrder.DisplayNumber}"
                        SortPropertyName="PurchaseOrderDetail.PurchaseOrder.DisplayNumber"
                        GroupPropertyName="PurchaseOrderDetail.PurchaseOrder.DisplayNumber"/>
                    <abcd:DetailsViewColumn Header="Line Item" Width="200"
                        DisplayMemberBinding="{Binding PurchaseOrderDetail.ShortItemDescription}"/>
                    <abcd:DetailsViewColumn Header="Date" Width="80"
                        DisplayMemberBinding="{Binding EntryDate, StringFormat=\{0:d\}}"
                        SortPropertyName="EntryDate" DefaultSortDirection="Descending"/>
                    <abcd:DetailsViewColumn Header="Encumbrance" Width="100"
                        SortPropertyName="Amount">
                        <abcd:DetailsViewColumn.CellTemplate>
                            <DataTemplate>
                                <TextBlock Text="{Binding EncumbranceAmount, StringFormat={}{0:C}}"
                                    TextAlignment="Right"/>
                            </DataTemplate>
                        </abcd:DetailsViewColumn.CellTemplate>
                    </abcd:DetailsViewColumn>
                    <abcd:DetailsViewColumn Header="Liquidation" Width="100"
                        SortPropertyName="Amount">
                        <abcd:DetailsViewColumn.CellTemplate>
                            <DataTemplate>
                                <TextBlock Text="{Binding LiquidationAmount, StringFormat={}{0:C}}"
                                    TextAlignment="Right"/>
                            </DataTemplate>
                        </abcd:DetailsViewColumn.CellTemplate>
                    </abcd:DetailsViewColumn>                                       
                </abcd:DetailsView>
            </ListView.View>
            <ListView.GroupStyle>
                <GroupStyle>
                    <GroupStyle.ContainerStyle>
                        <Style TargetType="{x:Type GroupItem}">
                    <Setter Property="Template">
                        <Setter.Value>
                                    <ControlTemplate TargetType="{x:Type GroupItem}">
                                <Expander IsExpanded="True">
                                    <Expander.Header>
                                        <StackPanel Orientation="Horizontal">                                                        
                                            <TextBlock Text=" {Binding TotalAmount, StringFormat={}{0:C}}" FontSize="22" Foreground="Black" FontStyle="Italic" VerticalAlignment="Bottom" />
                                        </StackPanel>
                                    </Expander.Header>
                                    <ItemsPresenter />
                                </Expander>
                            </ControlTemplate>
                        </Setter.Value>
                    </Setter>
                </Style>
                    </GroupStyle.ContainerStyle>
                </GroupStyle>
            </ListView.GroupStyle>

        </abcd:DetailsListView>
    </Grid>
</etk:BusyIndicator>

背后的代码是

private void AutoSortList()
    {
        ICollectionView dataView = CollectionViewSource.GetDefaultView(EncumbranceEntriesList.ItemsSource);

        if (dataView != null && dataView.SortDescriptions.Count == 0)
        {
            dataView.SortDescriptions.Add(new SortDescription("PurchaseOrderDetail.PurchaseOrder.DisplayNumber", ListSortDirection.Ascending));
            dataView.SortDescriptions.Add(new SortDescription("PurchaseOrderDetail.TransactionDate", ListSortDirection.Ascending));
            dataView.SortDescriptions.Add(new SortDescription("EntryDate", ListSortDirection.Ascending));

            EncumbranceEntriesList.Group("PurchaseOrderDetail.PurchaseOrder.DisplayNumber");

        }
    }

Answer 1

在GroupStyle中，你还有HeaderTemplate，它为你提供了“名字”和“ItemCount中”。它们分别对应于组的名称和其中包含的项目数。

<ListView.GroupStyle>
    <GroupStyle>
        <GroupStyle.HeaderTemplate>
            <DataTemplate>
                <TextBlock>
                    <TextBlock.Text>
                        <MultiBinding StringFormat="{}{0} ({1})">
                            <Binding Path="Name" />
                            <Binding Path="ItemCount" />
                        </MultiBinding>
                </TextBlock.Text>
            </TextBlock>
        </DataTemplate>
    </GroupStyle.HeaderTemplate>

Wpf向分组听众显示另一个项目

1 个答案: