使用VBA根据逻辑动态循环数组元素

问题描述

我正在编写一段代码来使用 VBA 中的数组概念来选择当前和下一个值。 但是，我在运行以下代码时遇到了运行时错误 13。

Sub PlaceTheQuarter()
Dim arr,Q1,Q2,Q3,Q4

arr = Array(1,"Q1",2,"Q2",3,"Q3",4,"Q4")
Q1 = Array("Jan","Feb","Mar")
Q2 = Array("Apr","May","Jun")
Q3 = Array("Jul","Aug","Sep")
Q4 = Array("Oct","Nov","Dec")

'MsgBox (Application.Match(Application.RoundUp(Month(Date) / 3,0)))
MsgBox (arr(Application.Match(Application.RoundUp(Month(Date) / 3,0),arr,0)))

'ENABLE THIS PART TO TEST Q4 IteraTION
Dim idate As Date
idate = "31-DEC-2020"
a = arr(Application.Match(Application.RoundUp(Month(idate) / 3,0))

'a = arr(Application.Match(Application.RoundUp(Month(Date) / 3,0))
i = Mid(a,1)

Dim next_q As Integer

If i = 4 Then
 next_q = 1
Else
 next_q = i + 1
End If

MsgBox ("Next Quarter is: Q" & next_q)

MsgBox (MonthName(Month(idate),True))
counter = 0

Dim n_quarter
n_quarter = "Q" & next_q

    For Each ab In Q4
        If MonthName(Month(idate),True) = ab Then
            MsgBox ab
            Dim pos As Integer
            pos = Application.Match(ab,Q4,False)
            MsgBox pos
        Else
        End If
    Next


End Sub

基本上在 Foreach 循环中，如果我手动使用季度名称作为 Q4，它会很好地循环。但我想根据 Q&next_q 之类的值动态传递它..我已经分配了一个字符串值并通过这里的那个变量在我的情况下不起作用。

非常感谢您对此的任何指示...

我的目的是让相应的季度数组随着日期在一年中的进展而循环。

解决方法

请测试下一个代码。它应该像（我理解）你在上一条评论中要求的那样：

Sub PlaceTheQuarter()
 Dim arr,arrQ,Q1,Q2,Q3,Q4,ab,a As String,i As Long,k As Long
 Dim next_q As Long,next_month As Long,arrFin,j As Long,actQ As Long
 
 arr = Array(1,"Q1",2,"Q2",3,"Q3",4,"Q4")
 Q1 = Array("Jan","Feb","Mar")
 Q2 = Array("Apr","May","Jun")
 Q3 = Array("Jul","Aug","Sep")
 Q4 = Array("Oct","Nov","Dec")
 arrQ = Array(Q1,Q4)

 Dim idate As Date: idate = Date '"02.10.2021"

 a = arr(Application.match(Application.RoundUp(Month(idate) / 3,0),arr,0))

 Select Case a
    Case "Q1": next_month = Month(idate): actQ = 0
    Case "Q2": next_month = Month(idate) - 3: actQ = 1
    Case "Q3": next_month = Month(idate) - 6: actQ = 2
    Case "Q4": next_month = Month(idate) - 9: actQ = 3
 End Select
 
 ReDim arrFin((3 - next_month) + 2)
 i = Mid(a,1)

 If i = 4 Then
    next_q = 1
 Else
    next_q = i + 1
 End If
 'fill the final array containing the remained month plus the next quarter months:
 For j = next_month To 2
    arrFin(k) = arrQ(actQ)(j): k = k + 1
 Next j
 For j = 0 To 2
    arrFin(k) = arrQ(next_q - 1)(j): k = k + 1
 Next j
 '______________________________________________________
 'Iterate between the necessary array elements:
 For Each ab In arrFin
    Debug.Print ab
 Next
End Sub