用excel VBA 编写打开和关闭多个工作薄，相应的代码如下：
1、打开指定工作簿
dim wb as workbook
set wb = " 文件路径及文件名"
workbooks.open filename:= wb
2、关闭所有工作簿并保存
workbooks.close
3、打开多个工作薄的程序代码：
Sub OpenWorkbooks()
On Error Resume Next
Dim SelectFiles As Variant
'显示打开文件对话框
SelectFiles = Application.GetOpenFilename("Excel 文件 (*.xl*)," & "*.xl*", , "打开", , True)
'未选择
If TypeName(SelectFiles) = "Boolean" Then
Exit Sub
End If
'打开所选工作簿
For i = 1 To UBound(SelectFiles)
Workbooks.Open SelectFiles(i)
Next i
End Sub