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VB获取文件大小的方法

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这篇文章主要介绍了VB获取文件大小的方法,可实现准确获取文件大小的功能,需要的朋友可以参考下

本文实例讲述了VB获取文件大小的方法。分享给大家供大家参考。具体实现方法如下：

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<%
  ' Copyright (c) 2009, reusablecode.blogspot.com; some rights reserved.
  '
  ' This work is licensed under the Creative Commons Attribution License. To view
  ' send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California
  ' 94305, USA.
  ' Retrieve the file size of a given file.
  function getFileSize(someFile)
    dim fs
    dim file
    set fs = Server.CreateObject("Scripting.FileSystemObject")
    set file = fs.GetFile(Server.MapPath(someFile))
    getFileSize = FormatFileSize(file.size)
    set file = nothing
    set fs = nothing
  end function
  ' Format a file size in the most practical units.
  ' Input: size in bytes
  function FormatFileSize(size)
    dim units
    dim factor
    units = Array("B", "kB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB")
    factor = log(size) \ 7
    FormatFileSize = Round(size / (1024 ^ factor), 2) & units(factor)
  end function
%>

希望本文所述对大家的VB程序设计有所帮助。