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
如何善用Response.Buffer增进浏览速度?
利用 Meta Tag 来增加文件属性
要如何使用 ASP Error 组件?
Server.Execute和#include相异之处
ASP中文本文件与数据库文件的数据交换
如何用ASP建立图表
如何在ASP中通过ODBC调用Excel中的数据
不刷新页面改变下拉菜单内容
使用ASP重启服务器
用模板建立动态ASP页
如何用ASP将一大段文字中的HTML的标识去掉
让使用者可以看到你的ASP的原代码
用ASP实现在特定的时段或对特定访问者开放
在ASP中判断SQL语句是否执行成功
直接显示Monday等星期的ASP语句
LINE 的计数器源程序(附源代码)
使用asp+中的若干问题及解决方案
ASP实现多语言支持
Session对象在各浏览器中的有效范围
SQL Server如何解决加密问题?

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: 75 ::
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