'在程序退出前调用下面代码,即可实现当文件到达一定大小才压缩数据库

Public Function AutoCompactCurrentProject()
    Dim fs, f, s, filespec
    Dim strProjectPath As String, strProjectName As String
    strProjectPath = Application.CurrentProject.Path
    strProjectName = Application.CurrentProject.Name
    filespec = strProjectPath & "\" & strProjectName
    Set fs = CreateObject("Scripting.FileSystemObject")
    Set f = fs.GetFile(filespec)
    s = CLng(f.Size / 1000000)                      '转换成MB
    If s > 20 Then
        Application.SetOption ("Auto Compact"), 1   '压缩
    Else
        Application.SetOption ("Auto Compact"), 0   '不压缩
    End If
End Function