如何在开发人员错误使用属性时强制异常

我试图在一些代码中设置一些使我陷入困境的修复程序,并试图在开发人员试图访问未满足规则的属性时抛出一些异常。

铌。为了清楚起见,这门课很多都被省略了。

myobject = new POSTerminalList(mCommonManagers)

' This should throw an error which it does but is out of scope. 
Log.Write(myobject.Current.Description)

目前我正在抛出一个异常,但这会丢失调用函数(这就是问题所在)。

是否有某种方法来保护这样的属性,以便如果开发人员不正确地使用该属性,您知道应该在哪里查找而不是在这个类中查找。

虽然这段代码是vb.net,但我对设计方法而不是语言感兴趣,所以c实现也对我有用。

<DebuggerDisplay("{mCode}", Name:="{mDescription}")> _
Public Class POSTerminalList
Inherits SortedList(Of Integer, POSTerminal)

    Private mCurrentTerminal As POSTerminal
    Private mCurrentTerminalNumber As Integer

    Private Sub New()
        mFullList = New SortedList(Of Integer, POSTerminal)
    End Sub

    Public Sub New(ByVal theManagers As IPSBusiness.CommonManagers)
        Me.New()
    End Sub

    ''Internal thread that is assessing things and calling this method.
    Private Sub SetCurrentTerminal()
        If mCurrentTerminalNumber = 0 Then
            mCurrentTerminal = Nothing
        Else
            If Me.ContainsKey(mCurrentTerminalNumber) Then
                mCurrentTerminal = me.Item(mCurrentTerminalNumber)
            Else
                mCurrentTerminal = Nothing
            End If
        End If
    End Sub

    Public ReadOnly Property Current() As POSTerminal
        Get
            If mCurrentTerminal Is Nothing Then 
                Throw New POSTerminalMissingException(
                    "Attempt to use the Current Terminal without a " +
                    "valid current terminal. This is a developer error.")
            Return mCurrentTerminal
        End Get
    End Property

End Class