关于excel vba：无限的VBA循环除非我单步执行代码


Endless VBA Loop UNLESS I step through the code

我有一个带有6个列表对象的用户窗体。所有列表对象都具有命名范围行源。单击任何一个列表中的任何一个项目都将引用电子表格中的图表，并清除不属于所选内容的任何项目单元格的内容(如果您感兴趣，请在下面更好地解释)。我的所有列表对象都只有"更新后"触发器，其他的一切都由私有Sub处理。

总之，有很多循环和从一个列表跳到另一个列表。如果我正常运行用户窗体，它将无限循环。它似乎运行了一次，然后就好像用户一次又一次地单击了列表中的同一项。

奇怪的是，如果我单步执行代码(F8)，它会完美结束，当它应该结束时，控制权会返回给用户。

有人想知道为什么会这样吗？

编辑：我最初没有发布代码，因为它基本上都是一个循环，有150多行。我不明白如果单步执行会使代码工作得很好，那么它怎么可能是代码，但是允许它定期运行会使它成为无止境的循环。不管怎样，代码如下：

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Option Explicit
    Dim arySelected(6) As String
    Dim intHoldCol As Integer, intHoldRow As Integer
    Dim strHold As String
    Dim rngStyleFind As Range, rngStyleList As Range

Private Sub UserForm_Activate()
    Set rngStyleList = Range("Lists_W_Style")
    Set rngStyleFind = Range("CABI_FindStyle")
End Sub
Private Sub lstStyle_AfterUpdate()
    If lstStyle.ListIndex >= 0 Then
        arySelected(0) = lstStyle.Value
        Call FilterCabinetOptions(Range("Lists_W_Style"), Range("CABI_FindStyle"), 0)
    End If
End Sub
Private Sub lstWood_AfterUpdate()
    If lstWood.ListIndex >= 0 Then
        arySelected(1) = lstWood.Value
        Call FilterCabinetOptions(Range("Lists_W_Wood"), Range("CABI_FindWood"), 1)
'        lstWood.RowSource ="Lists_W_Wood"
    End If
End Sub
Private Sub cmdReset_Click()
    Range("Lists_S_Style").Copy Destination:=Range("Lists_W_Style")
    Call RemoveXes(Range("Lists_W_Style"))
    Range("Lists_S_Wood").Copy Destination:=Range("Lists_W_Wood")
    Call RemoveXes(Range("Lists_W_Wood"))
    Range("Lists_S_Door").Copy Destination:=Range("Lists_W_Door")
    Call RemoveXes(Range("Lists_W_Door"))
    Range("Lists_S_Color").Copy Destination:=Range("Lists_W_Color")
    Call RemoveXes(Range("Lists_W_Color"))
    Range("Lists_S_Glaze").Copy Destination:=Range("Lists_W_Glaze")
    Call RemoveXes(Range("Lists_W_Glaze"))
    Range("Lists_S_Const").Copy Destination:=Range("Lists_W_Const")
    Call RemoveXes(Range("Lists_W_Const"))
    Range("Lists_S_DrawFrontConst").Copy Destination:=Range("Lists_W_DrawFrontConst")
    Call RemoveXes(Range("Lists_W_DrawFrontConst"))
End Sub
Private Sub FilterCabinetOptions(rngList As Range, rngFind As Range, intAry As Integer)
    Dim intListCntr As Integer, intFindCntr As Integer, intStyleCntr As Integer
    If intAry = 0 Then
        Call FindStyle(arySelected(intAry))
    Else
        'Save the List item.
        For intListCntr = 1 To rngList.Rows.Count
            If rngList.Cells(intListCntr, 1) = arySelected(intAry) Then
                rngList.Cells(intListCntr, 3) ="X"
'                Call RemoveNonXes(rngList)
                Exit For
            End If
        Next intListCntr
        'Save the column of the Find List.
        For intFindCntr = 1 To rngFind.Columns.Count
            If rngFind.Cells(1, intFindCntr) = arySelected(intAry) Then
                'Minus 2 to allow for columns A and B when using Offset in the below loop.
                intHoldCol = rngFind.Cells(1, intFindCntr).Column - 2
                Exit For
            End If
        Next intFindCntr
        'Find appliciple styles.
        For intStyleCntr = 1 To rngStyleFind.Rows.Count
            If Len(rngStyleFind.Cells(intStyleCntr, intHoldCol)) > 0 Then
                Call FindStyle(rngStyleFind.Cells(intStyleCntr, 1))
            End If
        Next intStyleCntr
    End If
    Call RemoveNonXes(rngStyleList)
    Call RemoveNonXes(Range("Lists_W_Wood"))
    Call RemoveNonXes(Range("Lists_W_Door"))
    Call RemoveNonXes(Range("Lists_W_Color"))
    Call RemoveNonXes(Range("Lists_W_Glaze"))
    Call RemoveNonXes(Range("Lists_W_Const"))
    Call RemoveNonXes(Range("Lists_W_DrawFrontConst"))
End Sub
Private Sub FindStyle(strFindCode As String)
    Dim intListCntr As Integer, intFindCntr As Integer
    For intListCntr = 1 To rngStyleList.Rows.Count
        If rngStyleList.Cells(intListCntr, 1) = strFindCode Then
            rngStyleList.Range("C" & intListCntr) ="X"
            Exit For
        End If
    Next intListCntr
    For intFindCntr = 1 To rngStyleFind.Rows.Count
        If rngStyleFind.Cells(intFindCntr, 1) = strFindCode Then
            intHoldRow = rngStyleFind.Cells(intFindCntr).Row
            Exit For
        End If
    Next intFindCntr
    If Len(arySelected(1)) = 0 Then Call FindStyleOptions(Range("CABI_FindWood"), Range("Lists_W_Wood"))
    If Len(arySelected(2)) = 0 Then Call FindStyleOptions(Range("CABI_FindDoor"), Range("Lists_W_Door"))
    If Len(arySelected(3)) = 0 Then Call FindStyleOptions(Range("CABI_FindColor"), Range("Lists_W_Color"), Range("Lists_W_Wood"))
    If Len(arySelected(4)) = 0 Then Call FindStyleOptions(Range("CABI_FindGlaze"), Range("Lists_W_Glaze"), Range("Lists_W_Wood"))
    If Len(arySelected(5)) = 0 Then Call FindStyleOptions(Range("CABI_FindConst"), Range("Lists_W_Const"))
    If Len(arySelected(6)) = 0 Then Call FindStyleOptions(Range("CABI_FindDrawFrontConst"), Range("Lists_W_DrawFrontConst"))
End Sub
Private Sub FindStyleOptions(rngFind As Range, rngList As Range, Optional rngCheckList As Range)
    Dim intListCntr As Integer, intFindCntr As Integer
    Dim intStrFinder As Integer, intCheckCntr As Integer
    Dim strHoldCheck As String
    Dim strHoldFound As String, strHoldOption As String
    'Go through the appropriate find list (across the top of CABI)
    For intFindCntr = 1 To rngFind.Columns.Count
        strHoldOption = rngFind.Cells(1, intFindCntr)
        strHoldFound = rngFind.Cells(1, intFindCntr).Offset((intHoldRow - 1), 0)
        If Len(strHoldFound) > 0 Then
            If rngCheckList Is Nothing Then
                For intListCntr = 1 To rngList.Rows.Count
                    If rngList.Cells(intListCntr, 1) = strHoldFound Then
                        Call AddXes(rngList, strHoldFound,"X")
                        Exit For
                    End If
                Next intListCntr
            Else
                intStrFinder = 1
                Do While intStrFinder < Len(rngFind.Cells(1, intFindCntr).Offset((intHoldRow - 1), 0))
                    strHoldCheck = Mid(rngFind.Cells(1, intFindCntr).Offset((intHoldRow - 1), 0), intStrFinder, 2)
                    intStrFinder = intStrFinder + 3
                    For intCheckCntr = 1 To rngCheckList.Rows.Count
                        If strHoldCheck = rngCheckList(intCheckCntr, 1) And Len(rngCheckList(intCheckCntr, 3)) > 0 Then
                            Call AddXes(rngList, strHoldOption,"X")
                            intStrFinder = 99
                            Exit For
                        End If
                    Next intCheckCntr
                Loop
            End If
        End If
    Next intFindCntr
End Sub
Private Sub AddXes(rngList As Range, strToFind As String, strX As String)
    Dim intXcntr As Integer
    For intXcntr = 1 To rngList.Rows.Count
        If rngList.Cells(intXcntr, 1) = strToFind Then
            rngList.Cells(intXcntr, 3) = strX
            Exit For
        End If
    Next intXcntr
End Sub
Private Sub RemoveNonXes(rngList As Range)
    Dim intXcntr As Integer
    For intXcntr = 1 To rngList.Rows.Count
        If Len(rngList(intXcntr, 3)) = 0 Then
            rngList.Range("A" & intXcntr &":B" & intXcntr) =""
        Else
            rngList.Range("C" & intXcntr) =""
        End If
    Next intXcntr
End Sub
Private Sub RemoveXes(rngList As Range)
    rngList.Range("C1:C" & rngList.Rows.Count) =""
End Sub

说明：假设您有6个不同汽车状况的列表。所以make就是雪佛兰，福特，本田的一个列表…模型将是另一个与Malibu，Focus，Civic…但你也有蓝色，红色，绿色…所以，如果你的用户想要一辆绿色汽车，这个程序引用一个库存清单，并摆脱任何品牌、型号等。绿色不可用。同样，用户也可以从车型列表中点击Civic，它会从品牌中删除除本田以外的所有产品，等等。不管怎样，这就是我要做的。

相关讨论

看不到代码很难说。当您运行脚本时，"afterupdate"事件可能会被反复触发，导致无休止的循环。尝试使用计数器将更新限制为一个更改，并在计数器大于0时使其退出循环。

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