当前位置: 首页 > 图文教程 > 网络编程 > ASP > 关于释放session的两篇文章(一)

ASP
在线人数统计内幕
介绍一个制作下拉菜单完全不同的办法
server push具体实现(转)
如何完整纪录站内所有网页点选次数(转)
使用ASP常见问题解答(转载)
处理Asp中的错误
微软修补其IIS软件中的又一处安全漏洞
细细品味ASP.NET (一)
细细品味ASP.NET (二)
细细品味ASP.NET (三)
ASP+与JSP之间的抉择
细细品味ASP.NET (四)
细细品味ASP.NET (五)
用asp.net和xml做的新闻更新系统(1)
用asp.net和xml做的新闻更新系统(2)
用asp.net和xml做的新闻更新系统(3)
用ASP+XML打造留言本(1)
用ASP+XML打造留言本(2)
用ASP+XML打造留言本(3)
用ASP+XML打造留言本(4)

ASP 中的 关于释放session的两篇文章(一)


出处:互联网   整理: 软晨网(RuanChen.com)   发布: 2009-11-03   浏览: 93 ::
收藏到网摘: n/a

  If you are using ASP 3.0 (the version of ASP that comes with Windows 2000 / IIS 5) then you can use the following syntax:

Session.Contents.Remove "name"

where Name is the name of the Session variable you wish to remove. Removing Session variables in this way has its advantages over using the following method:

Session("Name") = Null

Namely, the above method (setting a Session variable to Null) only removes the memory associated with the Session variable itself... the Session object still maintains a reference to it, though. Each Session variables is stored in the Session object with a key/item pair, similar to the Scripting.Dictionary object. Therefore, using the Null method above, you are not removing the key from the Session Contents collection that contains the reference to the variable...

With the Remove method that we looked at first, you are removing both the key and item associated with a Session variable. There is also a RemoveAll method that can be used to scrap all of the Session variables completely:

Session.Contents.RemoveAll

Again, the Remove and RemoveAll methods are new to ASP 3.0. If you have ASP 2.0, you will need to use the Null method