1.  不打开工作簿取值

 
'   Retrieves a value from a closed workbook
‘http://www.experts-exchange.com/Software/Office_Productivity/Office_Suites/MS_Office/Excel/Q_21848838.html?qid=21848838
Private Function GetValue(path, file, sheet, ref)
Dim arg As String
'确保文件存在
If Right(path, 1) <> "\" Then path = path & "\"
    If Dir(path & file) = "" Then
        GetValue = "File Not Found"
        Exit Function
    End If
'创建参数
    arg = "'" & path & "[" & file & "]" & sheet & "'!" & _
      Range(ref).Range("A1").Address(, , xlR1C1)
'执行宏
    GetValue = ExecuteExcel4Macro(arg)
End Function
 
Sub TestGetValue()
    p = "c:\XLFiles\Budget"
    f = "99Budget.xls"
    s = "Sheet1"
    a = "A1"
    MsgBox GetValue(p, f, s, a)
End Sub