关于EXCLE 下拉框多选的设置。
本文转载于：https://www.cnblogs.com/boosasliulin/p/5970120.html
本文转载于：https://blog.csdn.net/qq_33269520/article/details/81173811

打开Exlce，设置数据有效性

确定，然后

右击查看代码，把这段代码复制到新建的文件里面

此时Excel会给出提示，选择否，

系统会提示保存，在保存的时候选择启用宏的工作簿然后保存，此时Excel下拉框多选就搞定了，最后，代码如下：

Option Explicit

Sub Worksheet_Change(ByVal Target As Range)
'让数据有效性选择 可以多选,重复选
Dim rngDV As Range
Dim oldVal As String
Dim newVal As String
If Target.Count > 1 Then GoTo exitHandler

On Error Resume Next
Set rngDV = Cells.SpecialCells(xlCellTypeAllValidation)
On Error GoTo exitHandler

If rngDV Is Nothing Then GoTo exitHandler

If Intersect(Target, rngDV) Is Nothing Then
'do nothing
Else
Application.EnableEvents = False
newVal = Target.Value
Application.Undo
oldVal = Target.Value
Target.Value = newVal
If oldVal = “” Then
Else
If newVal = “” Then
Else
Target.Value = oldVal _
& ", " & newVal
End If
End If
End If

exitHandler:
Application.EnableEvents = True
End Sub

上面代码是为整个EXCLE设置多选，下面这段代码是为某行，或者
某几行设置多选
Option Explicit

Sub Worksheet_Change(ByVal Target As Range)
'让数据有效性选择 可以多选,重复选
Dim rngDV As Range
Dim oldVal As String
Dim newVal As String
If Target.Count > 1 Then GoTo exitHandler

On Error Resume Next
Set rngDV = Cells.SpecialCells(xlCellTypeAllValidation)
On Error GoTo exitHandler

If rngDV Is Nothing Then GoTo exitHandler

If Intersect(Target, rngDV) Is Nothing Then
'do nothing
Else
Application.EnableEvents = False
newVal = Target.Value
Application.Undo
oldVal = Target.Value
Target.Value = newVal
If Target.Column = 3 Or Target.Column = 3 Then '这里规定好哪一列的数据有效性是多选的，A列是第1列，依次类推，如3就是C列，7就是G列，设置多个用Or连接
If oldVal = “” Then
'do nothing
Else
If newVal = “” Then
'do nothing
Else
If InStr(1, oldVal, newVal) <> 0 Then '重复选择视同删除
If InStr(1, oldVal, newVal) + Len(newVal) - 1 = Len(oldVal) Then '最后一个选项重复
Target.Value = Left(oldVal, Len(oldVal) - Len(newVal) - 1)
Else
Target.Value = Replace(oldVal, newVal & “,”, “”) '不是最后一个选项重复的时候处理逗号
End If
Else '不是重复选项就视同增加选项
Target.Value = oldVal & “,” & newVal
’ NOTE: you can use a line break,
’ instead of a comma
’ Target.Value = oldVal _
’ & Chr(10) & newVal
End If
End If
End If
End If
End If

exitHandler:
Application.EnableEvents = True
End Sub