让构造器警告开发者错误的值?

Private _bgWorker As BackgroundWorker = Nothing
Private _bgWorkerMessage As String = String.Empty
Private _bgPercentComplete As Integer = 0
Private _dictQueries As Dictionary(Of String, String) = New Dictionary(Of String, String)

Public Sub New()
    _dictQueries.Add("IPB", "")
    _dictQueries.Add("Figure", "")
    _dictQueries.Add("Part", "")
    _dictQueries.Add("Tags", "")
End Sub

Public Sub New(ByRef bgWorker As BackgroundWorker)
    Me.New()
    _bgWorker = bgWorker
End Sub

Public Sub New(ByVal dictQueries As Dictionary(Of String, String))
    Me.New()
    If Not dictQueries.ContainsKey("IPB") Or Not dictQueries.ContainsKey("Figure") Or Not dictQueries.ContainsKey("Part") Or Not dictQueries.ContainsKey("Tags") Then
        'I want to throw an exception/warning right here, or make it error out'
    End If
    _dictQueries = dictQueries
End Sub

Public Sub New(ByRef bgWorker As BackgroundWorker, ByVal dictQueries As Dictionary(Of String, String))
    Me.New(bgWorker)
    If Not dictQueries.ContainsKey("IPB") Or Not dictQueries.ContainsKey("Figure") Or Not dictQueries.ContainsKey("Part") Or Not dictQueries.ContainsKey("Tags") Then
        'I want to throw an exception/warning right here, or make it error out'
    End If
    _dictQueries = dictQueries
End Sub

我的目标是创建一个类,只要设置了连接和查询,就可以将相同的文件类型和结构导入任何数据库。我们有一个“公共”数据库模式,但是每当我们创建SQLite应用程序时,不能保证开发人员会使用相同的模式。因此,在主构造函数中,我将定义公共查询。但是如果他们定义了查询,我想确保有四个特定的查询,因为我只使用这些查询。现在,我想在构造器中检查它,以便开发人员能够捕捉到它。用户捕捉到它是毫无意义的,因为这样产品就不应该发布了。那么,有没有办法检查构造函数上的参数以确保它是“有效的”。我知道visualstudio会用type自动执行此操作,但我不知道是否有方法检查这些值以确保它们是所需的。我只想抛出一个警告,而不是阻止它生成(他们可能会传入一个从数据库生成的值,谁知道呢)。