无法更改数组的维数

下面这段程序中的：ReDim sj(1, add - 1)与ReDim Preserve sj(1, UBound(sj, 2) + add)都显示：无法更改数组的维数，应怎样修改，谢谢！



Private Sub Button10_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button10.Click


        Dim sj() As Long
        Dim dn As Long
        Dim sjStr() As String
        Dim str
        Dim add As Integer
        
        add = 300
        dn = 0
        ReDim sjStr(add - 1)
        ReDim sj(1, add - 1)

        For b = 1 To Rows-1
            With Me.AxfpSpread1
                .Row = b
                .Col = 1
                'Value数值，Text文本
                str = .Value
            End With

            If str <> "" Then
                If dn > UBound(sjStr) Then
                    ReDim Preserve sjStr(UBound(sjStr) + add)
                    ReDim Preserve sj(1, UBound(sj, 2) + add)
                End If
                sjStr(dn) = str
            End If
        Next b

        
    End Sub

[此贴子已经被作者于2023-4-5 18:25编辑过]