无法使用数组成员变量分配数组

Question

我有一个类，其中一个成员变量是一个数组。我正在尝试将数组分配给对象，但不断收到“无法分配数组”编译错误。我也很好奇如何在对象中获取数组的 UBound。 UBound(obj.array) 无法编译。我正在使用 excel 07 vba。

'Test routine that keeps failing

Sub test()  

Dim Arr(2) As String
Arr(0) = ""
Arr(1) = "Pizza"
Arr(2) = "Hoes"

Dim obj As Cats
Set obj = New Cats
obj.avry = Arr
obj.field = 4    
MsgBox UBound(obj.ary)

End Sub  


'Class declaration
Private pary() As String
Private pfield As Long

Public Property Get ary(ByVal index As Long) As String
    Set ary = pary(index)
End Property

Public Property Let avry(Value() As String)
    ReDim pary(UBound(Value)) As String
    For i = LBound(Value) To UBound(Value)
        pary(i) = Value(i)
    Next i
End Property

Public Property Get field() As Long
    field = pfield
End Property

Public Property Let field(Value As Long)
    pfield = Value
End Property

Private Sub Class_Initialize()
    pfield = 0
End Sub

Answer 1

这对我有用

Sub test()

Dim Arr(2) As String
Arr(0) = ""
Arr(1) = "Pizza"
Arr(2) = "Hoes"

Dim obj As Cats
Set obj = New Cats
obj.avry = Arr
obj.field = 4
MsgBox obj.ary(2)

End Sub

Public Property Get ary(ByVal index As Long) As String
    ary = pary(index)
End Property

Public Property Let avry(vValue As Variant)
    ReDim pary(UBound(vValue)) As String
    Dim i As Long
    For i = LBound(vValue) To UBound(vValue)
        pary(i) = vValue(i)
    Next i
End Property

Public Property Get field() As Long
    field = pfield
End Property

Public Property Let field(Value As Long)
    pfield = Value
End Property

Private Sub Class_Initialize()
    pfield = 0
End Sub

正如 Tim 所说，您可以将数组作为变体传递。您的 MsgBox 正在尝试查找 String 数据类型的 UBound，所以这是一个问题。此外，您没有将参数传递给 MsgBox 中的 ary。 ary 属性返回一个字符串，但您使用的是 Set 关键字，这是另一个问题。

Answer 2

将数组参数传递给类属性似乎存在问题。

您可以通过将 Let 参数切换为 Variant 来解决此问题：

Public Property Let avry(ByRef arrVal As Variant)
    Dim i As Integer
    If IsArray(arrVal) Then
        ReDim pary(LBound(arrVal) To UBound(arrVal))
        For i = LBound(arrVal) To UBound(arrVal)
            pary(i) = arrVal(i)
        Next i
    End If
End Property