如何在WPF ListView中对项目进行分组

   <CollectionViewSource x:Key="groupedItems" Source="{Binding Items}">
       <CollectionViewSource.GroupDescriptions>
           <PropertyGroupDescription PropertyName="Category"/>
        </CollectionViewSource.GroupDescriptions>
    </CollectionViewSource>
</Window.Resources><ListView ItemsSource="{Binding Source={StaticResource groupedItems}}">
   <ListView.View>
       <GridView>
           <GridViewColumn Header="Name" DisplayMemberBinding="{Binding Name}"/>
           <GridViewColumn Header="Category" DisplayMemberBinding="{Binding Category}"/>
        </GridView>
    </ListView.View>
   <ListView.GroupStyle>
       <GroupStyle>
           <GroupStyle.HeaderTemplate>
                <DataTemplate>
                    <TextBlock FontWeight="Bold" Text="{Binding Name}"/>
                </DataTemplate>
            </GroupStyle.HeaderTemplate>
        </GroupStyle>
    </ListView.GroupStyle>
</ListView>

public class Item
{
    public string Name { get; set; }
    public string Category { get; set; }
}

public class MainViewModel
{
    public ObservableCollection<Item> Items { get; set; }

    public MainViewModel()
    {
        Items = new ObservableCollection<Item>
        {
            new Item { Name = "Item 1", Category = "Category A" },
            new Item { Name = "Item 2", Category = "Category B" },
            new Item { Name = "Item 3", Category = "Category A" },
            new Item { Name = "Item 4", Category = "Category C" },
            new Item { Name = "Item 5", Category = "Category B" },
        };
    }
}

public MainWindow()
{
    InitializeComponent();
    DataContext = new MainViewModel();
}