在父对象上引发通知事件时,Windows窗体数据绑定为什么要设置嵌套的布尔数据绑定属性?

好的,下面是我问题的一些上下文,写为伪C代码(请随意指出任何错误):(您可以直接跳到stacktrace,稍后再阅读上下文。)

public class SomeForm {
    private _model = new ViewModelClass
    public void new() {
        // Normal Winforms init omitted
        ViewModelClassBindingSource.DataSource = _model;
        SomeControl1.SetModel(_model);
    }
}
public class SomeControl {
    private _model = new ViewModelClass

    internal void SetModel(ViewModelClass model) {
        _model = model;
        ViewModelClassBindingSource.DataSource = model;
        ViewModelClassBindingSource.ResetBindings(true);
    }
}

public class ComplexObject : IPropertyChanging, IPropertyChanged {
    public property bool BoolProp {get; set;}
}

public class ViewModelClass : IPropertyChanged {
    property IList<ComplexObject> ComplexObjects {get;}

    property ComplexObject SelectedComplexObject {get; set;}

    property Object SomethingNotNecessarilyRelated {get; set;}

    private void NotifyPropertyChanged(string propName) {
        PropertyChanged(this, new PropertyChangedEventArgs(propName));
    }
}

这些类中提到的所有属性都是在Visual Studio 2008 Windows窗体设计器中数据绑定的。 SomeForm 或者在 SomeControl 课程。( ComplexObject.BoolProp 两者都是数据绑定的)。不要犹豫,多问一些有关上下文的问题。

问题是:当我在 ViewModelClass 同学们,有种下意识的反应 complexObject.boolprop(复杂对象.boolprop) 到 false ,使用这种堆栈跟踪:

System.dll!System.ComponentModel.ReflectPropertyDescriptor.SetValue(object component = "Object Exposed in 'SelectedComplexObject'", object value = false) + 0x124 bytes 
System.Windows.Forms.dll!System.Windows.Forms.BindToObject.SetValue(object value) + 0x5d bytes  
System.Windows.Forms.dll!System.Windows.Forms.Binding.PullData(bool reformat, bool force) + 0x15a bytes 
System.Windows.Forms.dll!System.Windows.Forms.BindingManagerBase.PullData(out bool success = true) + 0x6e bytes 
System.Windows.Forms.dll!System.Windows.Forms.BindingSource.ParentCurrencyManager_CurrentItemChanged(object sender = {System.Windows.Forms.CurrencyManager}, System.EventArgs e) + 0x54 bytes   
[Native to Managed Transition]  
[Managed to Native Transition]  
System.Windows.Forms.dll!System.Windows.Forms.CurrencyManager.OnCurrentItemChanged(System.EventArgs e) + 0x17 bytes 
System.Windows.Forms.dll!System.Windows.Forms.CurrencyManager.List_ListChanged(object sender, System.ComponentModel.ListChangedEventArgs e) + 0x3bc bytes   
System.Windows.Forms.dll!System.Windows.Forms.BindingSource.OnListChanged(System.ComponentModel.ListChangedEventArgs e) + 0x7e bytes    
System.Windows.Forms.dll!System.Windows.Forms.BindingSource.InnerList_ListChanged(object sender, System.ComponentModel.ListChangedEventArgs e) + 0x2e bytes 
System.dll!System.ComponentModel.BindingList<System.__Canon>.OnListChanged(System.ComponentModel.ListChangedEventArgs e) + 0x17 bytes   
System.dll!System.ComponentModel.BindingList<MyCompany.ViewModelClass>.Child_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e) + 0x176 bytes 
[Native to Managed Transition]  
[Managed to Native Transition]  
MyCompany.Gui.exe!MyCompany.ViewModelClass.NotifyPropertyChanged(String propertyName = "SomethingNotNecessarilyRelated") Line 437 + 0x3c bytes  Basic

程序为什么要设置 SomeBool 到 假 ?我怎么能阻止呢?