视图可见性不变

我有一个外壳,里面有两个视图。它们都使用相同的viewmodel,实际上shell也使用相同的viewmodel。我在shell中有两个按钮,用来改变这两个视图的可见性。看起来,即使命令正在启动,值正在更改,并且onpropertychanged配置正确,视图也没有刷新。我已经尝试从父shell和视图本身控制可见性。

以下是我的命令:

Public ReadOnly Property ShowMinimalistSearchResultsView As ICommand
            Get
                If _cmdShowMinimalistSearchResultsView Is Nothing Then
                    _cmdShowMinimalistSearchResultsView = New RelayCommand(AddressOf ShowMinimalistSearchResultsViewExecute)

                End If
                Return _cmdShowMinimalistSearchResultsView

            End Get
        End Property

        Public ReadOnly Property ShowSearchResultsView As ICommand
            Get
                If _cmdShowSearchResultsView Is Nothing Then
                    _cmdShowSearchResultsView = New RelayCommand(AddressOf ShowSearchResultsViewExecute)
                End If
                Return _cmdShowSearchResultsView

            End Get
        End Property

Private Sub ShowMinimalistSearchResultsViewExecute()
    Me.IsMinimalistSearchResultsViewVisible = True
End Sub

Private Sub ShowSearchResultsViewExecute()
    Me.IsMinimalistSearchResultsViewVisible = False

End Sub

这是可视布尔值。。。。

Private _isminimalistsearchresultsviewvisible As Boolean
Public Property IsMinimalistSearchResultsViewVisible As Boolean
    Get
        Return _isminimalistsearchresultsviewvisible
    End Get
    Set(ByVal value As Boolean)
        _isminimalistsearchresultsviewvisible = value
        OnPropertyChanged("IsMinimalistSearchResultsViewVisible")
    End Set
End Property

<local:MinimalistSearchResultsView Grid.Row="1"
                                           Visibility="{Binding IsMinimalistSearchResultsViewVisible,Converter={StaticResource DebugConverter}}" />

目前,我所要做的是让这一个视图显示或消失时,我发出的命令。我正在使用调试转换器来验证可见性是否正在尝试更改,而实际上并不是。

为什么这样不行?