仅查看已更改的模型OnPropertyChanged上的更新,但不查看已更改的ViewModelonPropertyChanged中的更新

我有一个ViewModel托管模型类的属性,其中ViewModel和模型都实现 INotifyPropertyChanged .

模型库:

public class BaseModel : INotifyPropertyChanged
{
    private int id;

    public int Id
    {
        get { return id; }
        set { id = value; OnPropertyChanged(new PropertyChangedEventArgs("Id")); }
    }

    public event PropertyChangedEventHandler PropertyChanged;

    public void OnPropertyChanged(PropertyChangedEventArgs propertyChangedEventArgs)
    {
        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyChangedEventArgs.PropertyName));
    }
}

public class ChildModel : BaseModel 
{

    private ObservableCollection<SubModel> positionen;

    public ObservableCollection<SubModel> Positionen
    {
        get { return positionen; }
        set { positionen = value; OnPropertyChanged(new PropertyChangedEventArgs("Positionen")); }
    }
}

视图模型库:

public abstract class BaseViewModel<T> where T : BaseModel , INotifyPropertyChanged
{
    public event PropertyChangedEventHandler PropertyChanged;


    protected void OnPropertyChanged(PropertyChangedEventArgs propertyChangedEventArgs)
    {
        PropertyChanged?.Invoke(this, propertyChangedEventArgs);
    }


    public abstract ObservableCollection<T> DatensatzListe { get; set; }

    public abstract T AktuellerDatensatz { get; set; }

}

ViewModel child(此处属性的更新不会显示在视图中):

public class ChildViewModel : BaseViewModel<ChildModel >
{
    public override ObservableCollection<ChildModel > DatensatzListe
    {
        get { return DatensatzListe; }
        set { DatensatzListe = value; }
    }

    private ChildModel aktuellerDatensatz;

    public override ChildModel AktuellerDatensatz
    {
        get { return aktuellerDatensatz; }
        set { aktuellerDatensatz = value; OnPropertyChanged(new PropertyChangedEventArgs("AktuellerDatensatz")); }
    }

    private string tesxt;

    public string Tesxt
    {
        get { return tesxt; }
        set { tesxt = value; OnPropertyChanged(new PropertyChangedEventArgs("Tesxt")); }
    }
}

如果更新代码隐藏中的Tesxt属性,则更新不会显示在视图中。我更新了AktuellerDatensatz.Id,没什么变化。