关于excel进程问题
Dim xlApp As New Excel.Application
xlApp.Visible = True
With xlApp
Dim xlBook As Excel.Workbook
Dim xlSheet1 As Excel.Worksheet
Dim xlSheet As Excel.Worksheet
xlBook = .Workbooks.Open(Filename:="D:\cs\6.xls")
xlSheet = xlBook.Worksheets("sheet1")
xlSheet1 = xlBook.Sheets("sheet1")
xlSheet1.Range("A7:F21").Select()
.Selection.Copy()
xlSheet = xlBook.Sheets.Add
'xlSheet.Name = "5555"
xlSheet.Range("A1").Select()
.ActiveCell.FormulaR1C1 = "dfdfdfdf"
xlSheet.Range("A2:F16").Select()
.ActiveSheet.Paste()
.Application.DisplayAlerts = False '不显示对话框
.ActiveWindow.SelectedSheets.Delete() '删除sheet2
.ActiveWorkbook.Save()
.Workbooks.Close()
xlApp.Quit()
xlApp = Nothing
为什么每次程序运行后进程中还有excel,怎么释放掉excel进程