.net – 为什么我在IDisposable类中使用私有成员IDispos获取CA20

我有一个实现IDisposable的类,因为它有一个私有成员字段“foo”,它是IDisposable(在构造函数中初始化).我出乎意料地得到了CA2000代码分析错误,这要求我确保处理foo.但是,我在我的类的Dispose()代码中有foo.Dispose(),它应该处理这个问题.

我做了一些搜索,令人惊讶的是找不到答案.我究竟做错了什么？显然我遗漏了一些基本的东西.如何编写代码来克服这个问题？

我的VB代码：

Public Class Bar
    Implements IDisposable

    Private Foo As SomeDisposableThing

    Public Sub New()
        Foo = New SomeDisposableThing() With {.name = "hello"}
    End Sub

    '''' snip ''''

    Private disposedValue As Boolean = False        ' To detect redundant calls '

    Protected Overridable Sub Dispose(ByVal disposing As Boolean)
        If Not Me.disposedValue Then
            If disposing Then
                If Foo IsNot Nothing Then Foo.Dispose()
            End If
        End If
        Me.disposedValue = True
    End Sub

    Public Sub Dispose() Implements IDisposable.Dispose
        Dispose(True)
        GC.SuppressFinalize(Me)
    End Sub

End Class

Dim temp = New SomethingDisposable()
temp.Name = "hello"
Foo = temp

Foo = New SomethingDisposable()
Foo.Name = "hello"