ListBox ItemsSource WPF绑定

Question

我对绑定不了解。我有一个DataTemplate正在工作的for类型的对象，但在这里我想做一个ListBox并将类型设置为对象属性之一的数据。我一直在使用Snoop来查看数据上下文，ListBox而Object中的数据上下文DataTemplate是Object，但是出现了错误，ItemsSource我不知道为什么。我在做ItemsSource={Binding componentList, Mode=TwoWay}一个对象有一个componentList和componentList是一个ObservableList。我想念什么？

这是我的XAML代码：

<Window.Resources>

<DataTemplate DataType="{x:Type properties:Component}">
  <StackPanel>
    <TextBlock Text="TEST COMPONENT" />
    <ListBox DataContext="{Binding propertyList}" ItemsSource="{Binding propertyList}" />
  </StackPanel>
</DataTemplate>

<DataTemplate DataType="{x:Type properties:Object}">
  <StackPanel>
    <TextBlock Text="TEST OBJECT" />
    <ListBox ItemsSource="{Binding componentList, Mode=TwoWay}" />
  </StackPanel>
</DataTemplate>

</Window.Resources>

和我的C＃代码：

public class Component
{
  public string name;
  public ObservableCollection<IProperty> propertyList;
}

public class Object
{
  public UnsignedProperty objectID;
  public ObservableCollection<Component> componentList;
}

我ListBox编写了一个in代码并将其设置ItemsSource为Objects列表，并看到了我的Object DataTemplate，但这就是它停止的地方

ListBox properties = new ListBox();
ObservableCollection<Properties.Object> t = new ObservableCollection<Properties.Object>();
t.Add(selectedObject); //potentially more objects
properties.ItemsSource = t;
PropertyPane.Content = properties;

任何帮助将非常感激。谢谢！

Answer 1

除了我上面的评论：

您不必创建ListBoxin代码，无需在XAML中创建代码，也无需将集合绑定到您的ItemsSource（依赖属性）。

像这样：

C＃：

public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();
        this.DataContext = this;

        Components.Add(new Object());
        Components.Add(new Object());
    }

    private ObservableCollection<Object> components;
    public ObservableCollection<Object> Components
    {
        get
        {
            if (components == null)
                components = new ObservableCollection<Object>();
            return components;
        }
    }
}

XAML：

<Window>   
   <Grid>
      <ListBox  ItemsSource="{Binding Components, Mode=OneWay}" />        
   </Grid>        
</Window>

另外，这是代码的延续：

C＃：

public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();
        this.DataContext = this;

        ListBox properties = new ListBox();
        ObservableCollection<Object> t = new ObservableCollection<Object>();
        t.Add(new Object()); //potentially more objects
        properties.ItemsSource = t;
        PropertyPane.Content = properties;
    }        
}

public interface IProperty
{
}

public class Component
{
    public string name;

    private ObservableCollection<IProperty> propertyList;
    public ObservableCollection<IProperty> PropertyList
    {
        get
        {
            if (propertyList == null)
                propertyList = new ObservableCollection<IProperty>();
            return propertyList;
        }
    }
}

public class Object
{
    private ObservableCollection<Component> componentList;
    public ObservableCollection<Component> ComponentList 
    {
        get
        {
            if (componentList == null)
                componentList = new ObservableCollection<Component>();
            return componentList;
        }
    }
}

XAML：

      <DataTemplate DataType="{x:Type local:Component}">
          <StackPanel>
              <TextBlock Text="TEST COMPONENT" />
              <ListBox ItemsSource="{Binding PropertyList, Mode=OneWay}" />
          </StackPanel>
      </DataTemplate>

      <DataTemplate DataType="{x:Type local:Object}">
          <StackPanel>
              <TextBlock Text="TEST OBJECT" />
              <ListBox ItemsSource="{Binding ComponentList, Mode=OneWay}" />
          </StackPanel>
      </DataTemplate>