C# 如何将实体的属性更改反映到WPF中的ViewModal

我有一个从INOTIFYPROPERTYCHANGED继承的实体，这个实体绑定到我的UI元素，比如TextBOX。现在，当任何属性发生更改时，我的绑定都会更新，一切正常。我想在viewmodal中捕获此propertychanged事件。我的viewmodal还继承了INOTIFYPROPERTYCHANGED

---

实体

public class DIPREDIPForView:INotifyPropertyChanged
{
    #region PrivateFields
    private string fieldDelimiter, textQualifier;

    #endregion
    public DIPREDIPForView()
    {

    }
    public string FieldDelimiter
    {
        get
        {
            return fieldDelimiter;
        }
        set
        {
            fieldDelimiter = value;
            OnPropertyChanged("FieldDelimiter");
            //NotifyViewModalEvent();
        }
    }
    public string TextQualifier {
        get
        {
            return textQualifier;
        }
        set
        {
            textQualifier = value;
            OnPropertyChanged("TextQualifier");
            //NotifyViewModalEvent();
        }
    }
    #region INotifyPropertyChanged Members
    public event PropertyChangedEventHandler PropertyChanged;

    public virtual void OnPropertyChanged(string propertyName)
    {
        PropertyChangedEventHandler handler = this.PropertyChanged;
        if (handler != null)
        {
            var e = new PropertyChangedEventArgs(propertyName);
            handler(this, e);
        }
    }
    #endregion

VIEWMODAL

public class DIPREDIPViewModel : BaseViewModel
{

    public DIPREDIPForView Configuration
    {
        get
        {
            return configuration;
        }
        set
        {
            configuration = value;               
        }
    }

}

BaseViewModal

public class BaseViewModel : INotifyPropertyChanged, IDisposable
{
    #region INotifyPropertyChanged Members

    public event PropertyChangedEventHandler PropertyChanged;


    public virtual void OnPropertyChanged(string propertyName)
    {
        PropertyChangedEventHandler handler = this.PropertyChanged;
        if (handler != null)
        {
            var e = new PropertyChangedEventArgs(propertyName);
            handler(this, e);
        }
    }
    #endregion


}

我想要的是，每当“配置”更改时，都应该通知ViewModal，因为我必须基于此调用其他逻辑

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我曾尝试在配置的setter中调用OnPropertyChanged（），但它没有启动。每当我在UI上更新一个值时，这个配置都会更新，但不会命中setter中的断点。如何实现这一点。

视图模型或视图模型库都没有订阅PropertyChanged事件。因此，当DIPREDIPForView引发事件时，这两个对象都不会收到事件通知

DIPREDIPViewModel可能需要订阅DIPREDIPForView上的PropertyChanged，事件订阅需要指向BaseViewModel上的OnPropertyChanged事件处理程序

不确定这是否是你要找的

这是一个样本

[Test]
public void TestEventIsRaised()
{
    TestEventSubscriber subscriber = new TestEventSubscriber();
    subscriber.SetFirstName("joe");
    Assert.IsTrue(subscriber.EventWasHandledInTestDouble);
}


public class TestEventSubscriber : EventSubscriber
{
    public bool EventWasHandledInTestDouble;
    public TestEventSubscriber()
    {

    }

    protected override void OnMyEvent(object sender, EventArgs args)
    {
        EventWasHandledInTestDouble = true;
    }
}

public class EventSubscriber
{
    private EventRaiser eventRaiser = new EventRaiser();

    public EventSubscriber()
    {
        eventRaiser.MyEvent += (sender, args) => {
            Console.Write("Event was handled via anonymous delegate");
        };

        eventRaiser.MyEvent = OnMyEvent;
    }

    public void SetFirstName(string firstName)
    {
        eventRaiser.FirstName = "bob";
    }

    protected virtual void OnMyEvent(object sender, EventArgs args)
    {
        Console.WriteLine("Event was handled via virtual method...");
    }
}


public class EventRaiser
{
    public EventHandler MyEvent;

    public EventRaiser()
    {

    }

    private string firstName;
    public string FirstName
    {
        get
        {
            return firstName;
        }
        set
        {
            firstName = value;
            EventHandler handler = this.MyEvent;
            if (handler != null)
                MyEvent(this, EventArgs.Empty);
        }
    }

}

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ViewModel是您的模型的视图。
我会考虑以下内容：

将类型为DIPREDIPForView的memeber添加到类DIPREDIPViewModel

使DIPREDIPForView成为未实现INotifyPropertyChanged的模型

公开属性：FieldDelimiter、TextQualifier和配置，全部来自DIPREDIPViewModel

将视图的DataContext（XAML）设置为ViewModel DIPREDIPViewModel以进行绑定 这样可以将所需的所有内容保留在一个类中，并使更新多个属性变得更简单