Question

我正在尝试将值的字符串复制到新工作表的单列中。我的代码在活动单元格中只有一个值时起作用，但是一旦有多个值，它将复制单元格中的每个值。我希望它仅将最新添加的内容复制到新工作表的列中。输入是来自允许多个选择的下拉菜单的选择。然后，我将这些选择拆分并偏移到9列以上的新单元格中（我也有其他下拉菜单，因此这就是为什么有这么多空间的原因，但是较大的循环应该能够处理其他下拉菜单）。

这是输入的图像：

这是我当前得到的输出：

这是我想要的输出：

If InStr(1, Oldvalue, Newvalue) = 0 Then
            Target.Value = Oldvalue & "; " & Newvalue
            Dim txt As String
            Dim i As Integer
            Dim FullName As Variant

            txt = ActiveCell.Value

            FullName = Split(txt, ";")

            For i = 1 To UBound(FullName)
                ActiveCell.Offset(i, 9).Value = FullName(i)
                ActiveCell.Offset(i, 9).Copy
                Worksheets("Links").Range("A3").End(xlUp).Offset(2, 0).Insert
            Next i

为了简化查找解决方案，我仅包含了有问题的代码循环。

Answer 1

我最好的猜测是，在检测到更改时，是否要更新9个单元格中的与众不同的值列表？

现在，您已经在管理一个单独的列表。您所需要做的就是清除第9列中的值，然后在下拉菜单中打印这些值。

Private Sub Worksheet_Change(ByVal Target As Range)
'Code by Sumit Bansal from https://trumpexcel.com
' To allow multiple selections in a Drop Down List in Excel (without repetition)
Dim Oldvalue As String
Dim Newvalue As String
Application.EnableEvents = True
On Error GoTo Exitsub
If Target.Address = "$A$1" Then
    If Target.SpecialCells(xlCellTypeAllValidation) Is Nothing Then
        GoTo Exitsub
    Else:
        If Target.Value = "" Then GoTo Exitsub Else
            Application.EnableEvents = False
            Newvalue = Target.Value
            Application.Undo
            Oldvalue = Target.Value
            If Oldvalue = "" Then
                Target.Value = Newvalue
            Else
                If InStr(1, Oldvalue, Newvalue) = 0 Then
                    Target.Value = Oldvalue & "; " & Newvalue

                Else:
                    Target.Value = Oldvalue
                End If

            End If
        Dim txt As String
        Dim i As Integer
        Dim FullName As Variant

        txt = ActiveCell.Value

        FullName = Split(txt, ";")
        ActiveCell.Offset(, 9).EntireColumn.Clear
        For i = 0 To UBound(FullName)

            ActiveCell.Offset(i, 9) = Trim(FullName(i))
        Next i
    End If
End If
Application.EnableEvents = True
Exitsub:
Application.EnableEvents = True
End Sub

但是，如果我想从一个或多个下拉列表中找到一个不同的列表怎么办？定界数组？管理其中的唯一列表的最佳方法是Collection或Dictionary对象。

如果这是您要寻找的内容，我将使用一种使用这些对象的方法来更新此答案。

根据您的反馈，我已将代码更新为以下代码，以使用集合对象从多个下拉列表中管理您的独特列表。

Option Explicit

Private col As Collection
'  ^ we are defining this to the module level. That means it will retain values
'    and be able to be referenced from any other place in the project.
Private Sub Worksheet_Change(ByVal Target As Range)
    'Code by Sumit Bansal from https://trumpexcel.com
    ' To allow multiple selections in a Drop Down List in Excel (without repetition)
    Dim Oldvalue As String
    Dim Newvalue As String
    Application.EnableEvents = True
    On Error GoTo Exitsub
    If Not Intersect(Target, Range("$A$1:$B$1")) Is Nothing Then
    '      ^ this will make the area your looking more specific than just .row = 11
    '        you could also replace the address with a namedRange
        If Target.SpecialCells(xlCellTypeAllValidation) Is Nothing Then
            GoTo Exitsub
        Else:
            If Target.Value = "" Then
                '' My guess is that here you would want to make a call to a function that
                '' removes values from the function. You should be able to loop over the collection
                '' to find the value to remove.
                GoTo Exitsub
            Else
                Application.EnableEvents = False
                Newvalue = Target.Value
                Application.Undo
                Oldvalue = Target.Value
                If Oldvalue = "" Then
                    Target.Value = Newvalue
                Else
                    If InStr(1, Oldvalue, Newvalue) = 0 Then
                        Target.Value = Oldvalue & "; " & Newvalue

                    Else:
                        Target.Value = Oldvalue
                    End If

                End If
            ManageList Newvalue
            '          ^ you already have the newest value. You just need a easy way to check if it
            '            is in the list. To do this I made a sub that receives text, and checks
            '            if it is in the publicly scoped collection.
            End If
        End If
    End If
    Application.EnableEvents = True
Exitsub:
    Application.EnableEvents = True
End Sub

Private Sub ManageList(txt As String)
' This Sub will receive a text value and try to put it in a collection. 

If col Is Nothing Then Set col = New Collection

On Error Resume Next
col.Add Item:=txt, Key:=txt
'  ^ this method will throw an error if the Key is already in the collection.
'    all we need to do then is watch for errors, and handle if we found a new one.
'    I have found that collections and dictionary objects can handle .5M keys without any issues.
'    using a dictionary, would allow you to test for a key without defining an error handler.
'    with the trade off being that you have to add an additional reference to your project.
If Err.Number = 0 Then
    ' we had a new value
    PrintList col
End If
End Sub

Private Sub PrintList(col As Collection)
Dim printTo As Range
Dim i As Long
Set printTo = Range("e1")
'                    ^ change e1 to a fully qualified address of where you
'                      want you list to be printed.
printTo.EntireColumn.Clear
On Error GoTo eos:
For i = 0 To col.Count - 1
    printTo.Offset(i) = col(i + 1)
Next
eos:
End Sub

如何仅将拆分单元格的最后一个值复制到新的工作表中

1 个答案: