如何获得WorksheetFunction.SumProduct()值以匹配=SUMPRODUCT()？

Question

我试图使用SUMPRODUCT来确定一个范围内的所有非空白值是否都是相同的。我能够使用this answer将其作为一个Excel公式工作，现在我希望通过使用WorksheetFunction.SumProduct()在VBA中获得结果。

我尝试了以下几点：

Public Function onlyOneValue(sheet As Worksheet) As Boolean

Dim sumProduct As Variant
Dim rng As Range
Dim rngAddress As String
Dim sumProductString As String
Dim column As Long

    Set rng = sheet.Range(sheet.Cells(5,20), _
                        sheet.Cells(65,20))
    rngAddress = rng.address
    sumProductString = "(" & rngAddress & "<>"""")/countif(" & _
                                            rngAddress & "," & rngAddress & "&"""")"
    sumProduct = WorksheetFunction.sumProduct(Evaluate(sumProductString))
    onlyOneValue = sumProduct = 1
End If

End Function

当我使用所有非空白值相同的列进行测试时，sumProduct的值是1.63934426229508E-02，但是当我将sumProductString复制到工作表上的=SUMPRODUCT()公式中时，就得到了1的预期值。

如果我不使用Evaluate()，而是使用：

WorksheetFunction.sumProduct(sumProductString)

然后我得到了这个错误：

Unable to get the SumProduct property of the WorksheetFunction class

如何在VBA中实现此功能？

Answer 1

当我将SUMPRODUCT添加到Evaluate并调整(即：

Public Function onlyOneValue(sheet As Worksheet) As Boolean

Dim rng As Range
Dim rngAddress As String
Dim sumProductString As String

    Set rng = sheet.Range(sheet.Cells(5, 20), _
                        sheet.Cells(65, 20))
    rngAddress = rng.Address
    sumProductString = "=SUMPRODUCT((" & rngAddress & "<>"""")/countif(" & _
                                            rngAddress & "," & rngAddress & "&""""))"

    onlyOneValue = (CLng(Evaluate(sumProductString)) = 1)

End Function