VBA 类 - 如何让一个类拥有额外的类

Question

我正在尝试使用类来解决一个挑战。

我正在将事务记录到一个类中。

每笔交易都有以下内容:

姓名

日期

时间

说明

但是，每笔交易也可以有许多具有以下属性的业务相关联系人

业务联系人姓名

业务区域

账单百分比

是否有任何示例说明如何做到这一点。

我曾尝试为业务联系人添加第二个类，然后在事务类中构建一个集合，但都没有任何乐趣。

我还尝试将业务联系方式作为交易类中的一个集合，但也没有任何乐趣。

以下是我到目前为止所拥有的，但我可能已经走上了死胡同，可能不值得尝试拯救代码

非常感谢任何帮助。

谢谢
J.P

测试子 - 尝试将数据写入并取回

Sub test()

    Dim x As Integer
    Dim xx As Integer

    'code to populate some objects
    Dim clocklist As Collection
    Dim clock As classClocks
    Dim businesscontactlist As Collection
    Dim businesscontact As classBusinessContact

    Set businesscontactlist = New Collection
    Set clocklist = New Collection

    For x = 1 To 3
        Set clock = New classClocks
        clock.LawyerName = "lawyer " & Str(x)
        For xx = 1 To 3
            businesscontact.Name = "Business Contact " & Str(xx)
            businesscontactlist.Add businesscontact

        Next xx
        clock.BusinessContactAdd businesscontactlist '----- errors here
        clocklist.Add clock
    Next x

    Set businesscontactlist = Nothing

    'write the data backout again
    For Each clock In clocklist
        Debug.Print clock.LawyerName
        Set businesscontactlist = clock.BusinessContacts
        For Each businesscontact In businesscontactlist
            Debug.Print businesscontact.Name
        Next

    Next

End Sub

时钟类 - 这是事务类

Private pLawyerName As String
Private pBusinessContactList As Collection

Public Property Get LawyerName() As String
    LawyerName = pLawyerName
End Property

Public Property Let LawyerName(ByVal sLawyerName As String)
    pLawyerName = sLawyerName
End Property

Public Property Get BusinessContacts() As Collection
    Set BusinessContacts = pBusinessContactList
End Property

Public Property Set BusinessContactAdd(ByRef strName() As Collection)
    Set pBusinessContactList = New Collection
    Dim businesscontact As classBusinessContact
    Set businesscontact = New classBusinessContact

    For Each businesscontact In strName
        businesscontact.Name = strName.Item()
        pBusinessContactList.Add businesscontact
    Next
End Property

商务联系类 - 目前只有一处房产

Private pBusinessContactName As String

Public Property Get Name() As String
    Name = pBusinessContactName
End Property

Public Property Let Name(ByVal sName As String)
    pBusinessContactName = sName
End Property

Answer 1

有一些事情不会按照您在代码中的预期进行。我已经清理了一下，这个新版本应该更接近你想要的。如果这些更改不言自明，请告诉我。

主要程序:

Sub test()

    Dim i As Long
    Dim j As Long

    'code to populate some objects
    Dim clocklist As Collection
    Dim clock As classClocks
    Dim businessContactList As Collection
    Dim businessContact As classBusinessContact

    Set clocklist = New Collection

    For i = 1 To 3
        Set businessContactList = New Collection
        Set clock = New classClocks
        clock.LawyerName = "lawyer " & i
        For j = 1 To 3
            Set businessContact = New classBusinessContact
            businessContact.Name = "Business Contact " & j
            businessContactList.Add businessContact
        Next j
        Set clock.BusinessContactAdd = businessContactList
        clocklist.Add clock
    Next i

    Set businessContactList = Nothing

    'write the data backout again
    For Each clock In clocklist
        Debug.Print clock.LawyerName
        Set businessContactList = clock.BusinessContacts
        For Each businessContact In businessContactList
            Debug.Print businessContact.Name
        Next

    Next

End Sub

类时钟:

Private pLawyerName As String
Private pBusinessContactList As Collection

Private Sub Class_Initialize()
  Set pBusinessContactList = New Collection
End Sub

Public Property Get LawyerName() As String
    LawyerName = pLawyerName
End Property

Public Property Let LawyerName(ByVal sLawyerName As String)
    pLawyerName = sLawyerName
End Property

Public Property Get BusinessContacts() As Collection
    Set BusinessContacts = pBusinessContactList
End Property

Public Property Set BusinessContactAdd(contactCollection As Collection)

    For Each contactName In contactCollection
        pBusinessContactList.Add contactName
    Next

End Property