将两个ViewModel的属性相互绑定/关联

我直接从一张图片开始,展示我的结构,这样我就可以用图片提问了。

ParentModel 这样地:

Public Class ParentModel
    public Property ModelValue_A As String
    Public Property ModelValue_B As String
End Class

我有一个 ParentViewModel ChildViewModel .

Public Class ParentViewModel
    Public Property Parent As ParentModel
    Public Property ChildViewModel_A As ChildViewModel
    Public Property ChildViewModel_B As ChildViewModel

    Sub New
        ChildViewModel_A = New ChildViewModel()
        ChildViewModel_B = New ChildViewModel()
    End Sub
End Class

我的 ParentView 是这样的:

<DataTemplate>
    <StackPanel Orientation="Horizontal">
        <ContentPresenter Content="{Binding ChildViewModel_A}"/>
        <ContentPresenter Content="{Binding ChildViewModel_B}"/>
    </StackPanel>
</DataTemplate>

儿童视图模型 是这样的:

Public Class ChildViewModel
    Private _ChildValue As String

    Public Property ChildValue As String
        Get
            Return _ChildValue
        End Get
        Set
            _ChildValue = Value
            NotifyPropertyChanged(NameOf(ChildValue))
        End Set
End Class

我的 ChildView 是这样的:

<DataTemplate>
    <TextBox Text="{Binding ChildValue}" />
</DataTemplate>

NotifyPropertyChanged

Public Event PropertyChanged As PropertyChangedEventHandler Implements INotifyPropertyChanged.PropertyChanged

Protected Sub NotifyPropertyChanged(info As [String])
    RaiseEvent PropertyChanged(Me, New PropertyChangedEventArgs(info))
End Sub

ChildValue 通过在 TextBox . 然而,我仍然没有在两者之间建立联系/关系 儿童价值 : ChildViewModel_A 和 ChildViewModel_B

:我怎么换 ModelValue_A 通过改变 儿童价值 ChildViewModel_A ,分别为 ModelValue_B 儿童价值 属于