シートにcsvファイルの名前を付けてcsvをexcelブックで開くマクロ

                                                                     
                                                                     
                                                                     
                                             
Sub fileopen()
    Dim FileNames As Variant
Dim fn As Variant
Dim SheetName As String


  FileNames = Application.GetOpenFilename _
    ("CSV(*.csv),*.csv", MultiSelect:=True)
  If VarType(FileNames) = vbBoolean Then Exit Sub
 
  For Each fn In FileNames
   ' Worksheets.Add After:=Worksheets(Worksheets.Count)
    
        SheetName = Dir(fn)
        '  ファイル名で新しいシート作成 
        Set NewWorkSheet = CreateWorkSheet(SheetName)
    With ActiveSheet.QueryTables.Add(Connection:= _
        "TEXT;" & fn, _
        Destination:=Range("A1"))
        .Name = ActiveSheet.Name
        .FieldNames = True
        .RowNumbers = False
        .FillAdjacentFormulas = False
        .PreserveFormatting = True
        .RefreshOnFileOpen = False
        .RefreshStyle = xlInsertDeleteCells
        .SaveData = True
        .AdjustColumnWidth = False
        .RefreshPeriod = 0
        .TextFilePromptOnRefresh = False
        .TextFilePlatform = 932
        .TextFileStartRow = 1
        .TextFileParseType = xlDelimited
        .TextFileTextQualifier = xlTextQualifierDoubleQuote
        .TextFileConsecutiveDelimiter = False
        .TextFileTabDelimiter = False
        .TextFileCommaDelimiter = True
        .TextFileTrailingMinusNumbers = True
        .Refresh BackgroundQuery:=False
    End With
        ActiveSheet.UsedRange.QueryTable.Delete
  Next fn
End Sub

Function CreateWorkSheet(WorkSheetName As String) As Worksheet
 
    ' 変数定義
    Dim NewWorkSheet As Worksheet
    Dim iCheckSameName As Integer
    
    ' ワークシートの作成
    ' ※一番最後に挿入
    Set NewWorkSheet = Worksheets.Add(After:=Worksheets(Worksheets.Count))
    
    ' 同じ名前ワークシートが無いか確認
    iCheckSameName = 0
    For Each WS In Sheets
     If WS.Name = WorkSheetName Then
       MsgBox "ワークシート名：" + WorkSheetName + " この名前は既に使われています。"
       iCheckSameName = 1
     End If
    Next
    
    '同じ名前のワークシートがなければ
    If iCheckSameName = 0 Then
        NewWorkSheet.Name = WorkSheetName
        Set CreateWorkSheet = NewWorkSheet
    End If
    
End Function