无法停止Combobox_Change事件VBA触发另一个Combobox_Change事件

Question

这个抓住了我 - 我有一个有三个组合框的表格，它们是：

Umbrella_Dropdown： Umbrella_Dropdown_Change触发器不会更改其他两个组合框中的值，但会更改其中列出的项目（因此它不会触发其他两个中的_change事件（不要担心声明 - 它们'在全球范围宣布）：

Private Sub Umbrella_Dropdown_Change()

If Fund_Temination.Umbrella_Dropdown.ListIndex = -1 And Fund_Temination.Umbrella_Dropdown.Value <> "" Then
    MsgBox "Please select from drop-down", vbInformation, "Select from drop-down"
    Fund_Temination.Umbrella_Dropdown.Value = ""
    Exit Sub
End If

sString = Umbrella_Dropdown.Value
l = 2
Fund_Temination.Fund_Name_Dropdown.Clear
Fund_Temination.MCH_Dropdown.Clear

Do Until l > WorksheetFunction.Max(Sheets("List of current funds").Range("C1048576").End(xlUp).Row, Sheets("List of current funds").Range("A1048576").End(xlUp).Row)
    If sString = "" Then
        If Trim(Sheets("List of current funds").Range("C" & l).Value) <> "" And Trim(Sheets("List of current funds").Range("A" & l).Value) <> "" Then
            Fund_Temination.Fund_Name_Dropdown.AddItem Sheets("List of current funds").Range("C" & l).Value
            Fund_Temination.MCH_Dropdown.AddItem Sheets("List of current funds").Range("A" & l).Value
        End If
        Else
            If Trim(Sheets("List of current funds").Range("C" & l).Value) <> "" And Trim(Sheets("List of current funds").Range("B" & l).Value) = sString And Trim(Sheets("List of current funds").Range("A" & l).Value) <> "" Then
                Fund_Temination.Fund_Name_Dropdown.AddItem Sheets("List of current funds").Range("C" & l).Value
                Fund_Temination.MCH_Dropdown.AddItem Sheets("List of current funds").Range("A" & l).Value
            End If
    End If
    l = l + 1
Loop

sString = ""

End Sub

MCH_Dropdown： MCH_Dropdown_Change触发器确实更改了其他两个组合框的值，虽然我在更改值之前已经包含Application.enableEvents = False但它似乎没有技巧并触发Umbrella_Dropdown_Change和Fund_Name_Dropdown_Change事件：

Private Sub MCH_Dropdown_Change()

If Len(Fund_Temination.MCH_Dropdown.Value) = 4 Then
    If Not Fund_Temination.MCH_Dropdown.ListIndex = -1 Then
        l = 1
        Do Until l > WorksheetFunction.Max(Sheets("List of current funds").Range("C1048576").End(xlUp).Row, Sheets("List of current funds").Range("A1048576").End(xlUp).Row)
            If Sheets("List of current funds").Range("A" & l).Value = Fund_Temination.MCH_Dropdown.Value Then
                Application.EnableEvents = False
                Fund_Temination.Fund_Name_Dropdown.Value = Sheets("List of current funds").Range("C" & l).Value
                Fund_Temination.Umbrella_Dropdown.Value = Sheets("List of current funds").Range("B" & l).Value
                Application.EnableEvents = True
                GoTo Finish
            End If
            l = l + 1
        Loop
        Else
            MsgBox "The MCH entered is not listed in the dropdown" & vbNewLine & vbNewLine & "Please re-enter the correct MCH or select from the dropdown", vbCritical, "Wrong MCH code entered"
            Fund_Temination.MCH_Dropdown.Value = ""
    End If
End If

Finish:

End Sub

对于触发其他人的Fund_Name_Dropdown_Change事件也可以这么说（虽然我只是通过我的代码，我可以看到这会导致无限的“循环”，其中Fund_Name_Dropdown_Change触发MCH_Dropdown_Change，这会触发Fund_Name_Dropdown_Change等等在时间的尽头..）

无论如何，如果你想看到Fund_Name_Dropdown_Change事件的代码就是这样：

Private Sub Fund_Name_Dropdown_Change()

If Not Fund_Temination.Fund_Name_Dropdown.ListIndex = -1 Then
    l = 1
    Do Until l > WorksheetFunction.Max(Sheets("List of current funds").Range("C1048576").End(xlUp).Row, Sheets("List of current funds").Range("A1048576").End(xlUp).Row)
        If Sheets("List of current funds").Range("C" & l).Value = Fund_Temination.Fund_Name_Dropdown.Value Then
            Application.EnableEvents = False
            Fund_Temination.MCH_Dropdown.Value = Sheets("List of current funds").Range("A" & l).Value
            Fund_Temination.Umbrella_Dropdown.Value = Sheets("List of current funds").Range("B" & l).Value
            Application.EnableEvents = True
            GoTo Finish
        End If
        l = l + 1
    Loop
End If

Finish:

End Sub

我可以做些什么来关闭触发器？！ 如果您需要任何进一步的信息，请告诉我，但我想我已经列出了一切。

提前致谢

Answer 1

Application.EnableEvents主要对UserForm对象没有影响。 （只是对冲我的陈述，所以人们不会开始给我举例）

您需要的是表单范围变量（最好的方法是添加自定义属性）来存储和操作表单的事件状态。

请参阅此示例并按照以下步骤重新编写代码：

'/ UserForm with 2 CheckBoxes :  CheckBox1 and  CheckBox2
Private m_bEvents         As Boolean

Public Property Let EnableFormEvents(bVal As Boolean)
    m_bEvents = bVal
End Property

Public Property Get EnableFormEvents() As Boolean
    EnableFormEvents = m_bEvents
End Property

Private Sub CheckBox1_Click()

    '/ Custom Event Status

    Me.EnableFormEvents = False
        Me.CheckBox2 = Me.CheckBox1
    Me.EnableFormEvents = True

End Sub

Private Sub CheckBox2_Click()

        If Me.EnableFormEvents Then
            MsgBox "Check box clicked by user."
        Else
             MsgBox "Check box clicked by code."
        End If
End Sub