如何在WPF ListView中对项目进行分组

Question

我有一个ListView我希望将结果分组,但我发现的例子不起作用.如何对结果进行分组？

我想分组Status自定义对象的属性.

这就是我所拥有的:

<ListView IsSynchronizedWithCurrentItem="True"
          ItemsSource="{Binding}"
          HorizontalContentAlignment="Stretch"
          ScrollViewer.HorizontalScrollBarVisibility="Disabled"
          Background="Transparent" SelectionChanged="ListView_SelectionChanged"
          Name="lstShelvedOrders">

        <ListView.GroupStyle>
            <GroupStyle>
                <GroupStyle.HeaderTemplate>
                    <DataTemplate>
                        <TextBlock FontWeight="Bold" FontSize="15"
                         Text="{Binding Path=Status}"/>
                    </DataTemplate>
                </GroupStyle.HeaderTemplate>
            </GroupStyle>
        </ListView.GroupStyle>

        <ListView.ItemContainerStyle>
            <Style TargetType="{x:Type ListViewItem}">
                <Setter Property="BorderThickness" Value="1" />
                <Setter Property="Width" Value="Auto" />
                <Setter Property="FontSize" Value="10.4"  />               
            </Style>
        </ListView.ItemContainerStyle>

        <ListView.View>
            <GridView>
                <GridViewColumn DisplayMemberBinding="{Binding Path=Number}" Header="Shelve ID"  />
                <GridViewColumn DisplayMemberBinding="{Binding Path=Customer}" Header="Customer" />
                <GridViewColumn DisplayMemberBinding="{Binding Path=PurchaseOrderNo}" Header="PO Number" />
                <GridViewColumn DisplayMemberBinding="{Binding Path=SubmittedBy}" Header="Shelved By"  />
                <GridViewColumn DisplayMemberBinding="{Binding Path=OrderDate, StringFormat=MMM dd\, yyyy}" Header="Date"  />
                <GridViewColumn DisplayMemberBinding="{Binding Path=CustomerTerms.Description}" Header="Order Terms"  />
                <GridViewColumn DisplayMemberBinding="{Binding Path=ShippingMethod.Description}" Header="Shipping"  />
                <GridViewColumn DisplayMemberBinding="{Binding Path=TotalPrice, StringFormat=c}" Header="Order Total"  />
            </GridView>
        </ListView.View>
    </ListView>

这是我的代码:

 void ShelvedOrderList_DataContextChanged(object sender, System.Windows.DependencyPropertyChangedEventArgs e)
 {
     AddGrouping();
 }

 private void AddGrouping()
 {
     if ( lstShelvedOrders.ItemsSource == null)
     {
         return;
     }

     CollectionView myView = (CollectionView)CollectionViewSource.GetDefaultView(lstShelvedOrders.ItemsSource);
     PropertyGroupDescription groupDescription = new PropertyGroupDescription("Status");
     myView.GroupDescriptions.Add(groupDescription);
 }

Answer 1

我马上注意到一件事 - GroupStyle.HeaderTemplate将被应用于a CollectionViewGroup,所以你DataTemplate应该看起来像这样:

<GroupStyle>
    <GroupStyle.HeaderTemplate>
        <DataTemplate>
            <TextBlock FontSize="15" FontWeight="Bold" Text="{Binding Name}"/>
        </DataTemplate>
    </GroupStyle.HeaderTemplate>
</GroupStyle>

CollectionViewGroup.Name将被分配该Status组的值.