如何在 WinRT Metro 应用程序中将 ListView 绑定到 ListView 内部

Question

我的应用程序中有两个 ListView。这是我的模特 class

  public class SurveyDetailViewModel : INotifyPropertyChanged
{
    private int _RoomTypeId;
    private string _RoomType;

    public int RoomTypeId
    {
        get { return _RoomTypeId; }

        set
        {
            _RoomTypeId = value;
            NotifyPropertyChanged("RoomTypeId");
        }
    }

    public string RoomType
    {
        get { return _RoomType; }

        set
        {
            _RoomType = value;
            NotifyPropertyChanged("RoomType");
        }
    }

    public ObservableCollection<SurveyProductDetails> SurveyProductDetails { get; set; }

    public event PropertyChangedEventHandler PropertyChanged;
    private void NotifyPropertyChanged(string propertyName)
    {
        if (PropertyChanged != null)
        {
            PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
        }
    } 
}


 public class SurveyProductDetails : INotifyPropertyChanged
{
    private Guid _RoomId;
    private int _ProductTypeId;
    private string _Title;
    private string _Color;
    private int _Quantity;
    private int _QuantityInstalled;
    private string _RoomDescription;
    private string _ProductDescription;
    private string _ProductSpecification;
    public Guid RoomId
    {
        get { return _RoomId; }

        set
        {
            _RoomId = value;
            NotifyPropertyChanged("RoomId");
        }
    }
    public int ProductTypeId
    {
        get { return _ProductTypeId; }
        set
        {
            _ProductTypeId = value;
            NotifyPropertyChanged("ProductTypeId");
        }
    }
    public string Title
    {
        get { return _Title; }
        set
        {
            _Title = value;
            NotifyPropertyChanged("Title");
        }
    }
    public string Color
    {
        get { return _Color; }
        set
        {
            _Color = value;
            NotifyPropertyChanged("Color");
        }
    }
    public string ProductSpecification
    {
        get { return _ProductSpecification; }

        set
        {
            _ProductSpecification = value;
            NotifyPropertyChanged("ProductSpecification");
        }
    }
    public string ProductDescription
    {
        get { return _ProductDescription; }

        set
        {
            _ProductDescription = value;
            NotifyPropertyChanged("ProductDescription");
        }
    }
    public int Quantity
    {
        get { return _Quantity; }

        set
        {
            _Quantity = value;
            NotifyPropertyChanged("Quantity");
        }
    }
    public int QuantityInstalled
    {
        get { return _QuantityInstalled; }

        set
        {
            _QuantityInstalled = value;
            NotifyPropertyChanged("QuantityInstalled");
        }
    }
    public string RoomDescription
    {
        get { return _RoomDescription; }

        set
        {
            _RoomDescription = value;
            NotifyPropertyChanged("RoomDescription");
        }
    }
   public event PropertyChangedEventHandler PropertyChanged;
    private void NotifyPropertyChanged(string propertyName)
    {
        if (PropertyChanged != null)
        {
            PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
        }
    } 
}

我有一个 Observable 集合对象

 ObservableCollection<SurveyDetailViewModel> surveyDetail = new ObservableCollection<SurveyDetailViewModel>();

哪个获取数据。我尝试将外部 ListView 的 ItemSource 设置为 surveyDetail

ItemsSource="{Binding surveyDetail}"

和内在这样的

ItemsSource="{Binding surveyDetail.SurveyProductDetails}"

我也试过这个内在的

ItemsSource="{Binding RelativeSource={RelativeSource TemplatedParent},Path=SurveyProductDetails}"

ItemsSource="{Binding RelativeSource={RelativeSource TemplatedParent},Path=surveyDetail.SurveyProductDetails}"

外部 ListView 工作正常但内部 ListView 根本没有绑定。需要帮助我做错了什么。

Answer 1

假设页面绑定到您可以使用此绑定的视图模型

ItemsSource="{Binding SurveyProductDetails}"

我会将 SurveyProductDetails 设置为只读属性您确保在调用 get 时支持字段不为空。

Answer 2

当您创建一个绑定到 ObservableCollection 的 ListBox 时，该列表中的每个项目都会被赋予一个数据上下文，它是集合中的对应对象。在这种情况下，每个顶级 ListBoxItem 都绑定到 SurveyDetailViewModel 类型的对象。

因此，您的 ItemsSource 只需：

{Binding SurveyProductDetails}

surveyDetail 可以省略。

如何在 WinRT Metro 应用程序中将 ListView 绑定到 ListView 内部

How to bind ListView inside ListView in WinRT Metro application

listview

winrt-xaml

windows-8.1

windows-phone-8.1