ListView中的WPF ListView [英] WPF ListView within a ListView

问题描述

我确定我缺少简单/显而易见的内容，但似乎无法将ListView的数据绑定到ListView中

I am sure I am missing something simple/obvious, but I cannot seem to bind the data of a ListView within a ListView

<Window x:Class="TestList.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="MainWindow" Height="350" Width="525">
<Window.Resources>
    <DataTemplate x:Key="InsideListTemplate">
        <StackPanel Orientation="Horizontal">
            <TextBlock Text="test" Width="50"></TextBlock>
            <TextBlock Text="{Binding OrderId}" Width="50"></TextBlock>
        </StackPanel>
    </DataTemplate>
    <DataTemplate x:Key="OrdersTemplate">
        <ListView HorizontalAlignment="Stretch"
                  HorizontalContentAlignment="Stretch"
                  MinWidth="100"
                  MinHeight="25"
            ItemsSource="{Binding Orders}" 
            ItemTemplate="{StaticResource InsideListTemplate}" 
        >
        </ListView>
    </DataTemplate>
    <DataTemplate x:Key="CustomersTemplate">
        <StackPanel Orientation="Horizontal" HorizontalAlignment="Stretch">
            <TextBlock Text="{Binding CustomerId}" Width="50" Foreground="Navy" VerticalAlignment="Center" />
            <ListBox ItemsSource="{Binding Orders}" ItemTemplate="{StaticResource OrdersTemplate}" HorizontalContentAlignment="Stretch"></ListBox>
        </StackPanel>
    </DataTemplate>

</Window.Resources>
<DockPanel LastChildFill="True">
    <ListView Name="listView" ItemTemplate="{StaticResource CustomersTemplate}" >
    </ListView>
</DockPanel>

using System.Collections.Generic;
namespace TestList
{
public partial class MainWindow
{
    public class Customer
    {
        public int CustomerId { get; set; }
        public List<Order> Orders { get; set; }
    }

    public class Order
    {
        public int OrderId { get; set; }
    }
    public MainWindow()
    {
        InitializeComponent();
        DataContext = this;
        var customers = new List<Customer>
                            {
                                new Customer
                                    {
                                        CustomerId = 1,
                                        Orders = new List<Order>
                                                     {
                                                         new Order {OrderId = 1},
                                                         new Order {OrderId = 2}
                                                     }
                                    },
                                new Customer
                                    {
                                        CustomerId = 2,
                                        Orders = new List<Order>
                                                     {
                                                         new Order {OrderId = 1},
                                                         new Order {OrderId = 2}
                                                     }
                                    }
                            };
        listView.ItemsSource = customers;
    }
  }
}

推荐答案

此是对Hadis答案的解释：

This is an explanation of Hadis answer:

您要将 ListBox 绑定到 Orders 客户模板中的集合。然后，在订单模板中，您再次定义 ListView 绑定到订单。这意味着此时的绑定路径是不存在的customer.orders.orders。

You are binding a ListBox to the Orders collection within the customer template. And then in the orders template you define a ListView binding again to the orders. This means that the binding path at that point is customer.orders.orders which does not exists.

如果仅删除 OrdersTemplate 并将 ListView 放在 ListBox 在客户模板中的位置，然后它就可以工作。

If you just remove the OrdersTemplate and place the ListView where the ListBox is in the customer template then it works.

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