C# 绑定嵌套集合时出现问题

我是WPF的初学者，我正在尝试绑定一个嵌套集合

我在网上找到了许多关于绑定的主题，我试着如下。我尝试更改Datacontext和ItemSource的值，但似乎无法正确执行

XAML：

它显示类别名称（例如“软饮料”或“咖啡”），但我无法显示单个项目。还有，有没有更好的方法？如前所述，我是WPF的初学者，似乎有许多有趣的功能我都没有

谢谢你的阅读

使用不允许使用嵌套项，因为它不提供

ItemsSource

属性

<DataTemplate>
    <TextBlock Text={Binding MyTextValue}/>
</DataTemplate>

---

你需要使用一个

hierarchycaldatatemplate

而不是

DataTemplate

。嗨@Bob，这让我找到了正确的方向！我切换到使用

TreeView

+

hierarchycaldatatemplate

，如下所示。如果您可以添加您的评论作为答案，我想将其标记为已接受。谢谢！

public class Menu
{
    public ObservableCollection<Category> Subs;

    public Menu()
    {
        Subs = new ObservableCollection<Category>();
    }
}

public class Category
{
    public ObservableCollection<MenuItem> Nodes;
    public Category()
    {
        Nodes = new ObservableCollection<MenuItem>();
    }
    private string name;
    public string Name
    {
        get { return this.name; }
        set { this.name = value; }
    }
    public Category(string name)
    {
        this.name = name;
        Nodes = new ObservableCollection<MenuItem>();
    }
}

public class MenuItem
{
    public MenuItem()
    {
    }

    public MenuItem(string name, string description, double cost)
    {
        this.itemName = name;
        this.description = description;
        this.cost = cost;
    }

    private string itemName;
    public string ItemName
    {
        get { return this.itemName; }
        set { this.itemName = value; }
    }

    private string description;
    public string Description
    {
        get { return this.description; }
        set { this.description = value; }
    }

    private double cost;
    public double Cost
    {
        get { return this.cost; }
        set { this.cost = value; }
    }
}

public Nav1()
    {
        InitializeComponent();
        // Init Model
        Menu myMenu = new Menu();
        myMenu.Subs.Add(new Category("Soft Drinks"));
        myMenu.Subs.Add(new Category("Coffee"));
        myMenu.Subs.Add(new Category("Premium"));

        myMenu.Subs[0].Nodes.Add(new MenuItem("Pepsi", "Cool & Refreshing", 1.39));
        myMenu.Subs[0].Nodes.Add(new MenuItem("Diet Pepsi", "Cool & Refreshing", 1.39));
        myMenu.Subs[0].Nodes.Add(new MenuItem("7Up", "Cool & Refreshing", 1.39));
        myMenu.Subs[0].Nodes.Add(new MenuItem("Mug Root Beer", "Cool & Refreshing", 1.39));
        myMenu.Subs[0].Nodes.Add(new MenuItem("Brisk Iced Tea", "Cool & Refreshing", 1.39));
        myMenu.Subs[0].Nodes.Add(new MenuItem("Bottled Water", "Thirsty? Aquafina.", 2.75));
        // Set DataContext for StackPanel
        Stack.DataContext = myMenu.Subs;
    }

<DataTemplate>
    <TextBlock Text={Binding MyTextValue}/>
</DataTemplate>

<HierarchicalDataTemplate ItemsSource={Binding MyListOfLevelTwoItems}>
    <TextBlock Text={Binding MyLevelOneValue}/>
</HierarchicalDataTemplate>
<DataTemplate DataType={x:Type MyLevelTwoItem}>
    <TextBlock Text={Binding MyLevelTwoValue}/>
</DataTemplate>