如何防止在Excel中覆盖带有下拉列表的单元格进行复制和粘贴？

Private Sub Worksheet_Change(ByVal Target As Range)
'Updated by Extendoffice 20200903
    Dim xValue As String
    Dim xCheck1 As String
    Dim xCheck2 As String
    Dim xRg As Range
    Dim xArrCheck1() As String
    Dim xArrCheck2() As String
    Dim xArrValue()
    Dim xCount, xJ As Integer
    Dim xBol As Boolean
'    If Target.Count > 1 Then
'        Exit Sub
'        End If
    xCount = Target.Count
    ReDim xArrCheck1(1 To xCount)
    ReDim xArrCheck2(1 To xCount)
    ReDim xArrValue(1 To xCount)
    Application.EnableEvents = False
    On Error Resume Next
    xJ = 1
    For Each xRg In Target
        xArrValue(xJ) = xRg.Value
         xArrCheck1(xJ) = xRg.Validation.InCellDropdown
        xJ = xJ + 1
    Next

    Application.Undo

    xJ = 1
    For Each xRg In Target
        xArrCheck2(xJ) = xRg.Validation.InCellDropdown
        xJ = xJ + 1
    Next

    xBol = False
    For xJ = 1 To xCount
        If xArrCheck2(xJ) <> xArrCheck1(xJ) Then
            xBol = True
            Exit For
        End If
    Next

    If xBol Then
       MsgBox "The selected cells containg data validation drop-down lists, no pasting allowed."
    Else
        xJ = 1
        For Each xRg In Target
            xRg.Value = xArrValue(xJ)
            xJ = xJ + 1
        Next

    End If

    Application.EnableEvents = True
End Sub