求助

表格只加了个下拉多选项
然后代码
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
然后问题来了 某一表格输入文字后，再次双击鼠标左键选择的时候，再移开就会出现重复的数据 如图 求大神解决