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
asp中如何限制重复提交同一表单
asp不用DSN访问数据库
ASP文件上传原理分析及实现实例
在ASP程序中访问Access数据库
datagrid编辑、修改、删除、翻页例子
用好ASP.NET 2.0的URL映射
ASP.NET中Datagrid常见错误
ASP.NET 2.0数据缓存功能简介
ASP.NET2.0的缓存控件和地址映射
ASP.NET 2.0中的DataSource系列控件
ASP.NET 2.0中的登陆控件简介
asp存储过程使用
在Asp中使用存储过程
ASP判断文件地址是否有效
ASP+SMTP完成邮件群发功能
用Asp隐藏文件路径实现防盗链
一个通用的保护ASP系统的方法
编写安全的ASP代码
ASP的错误处理集锦
ASP ActiveX 组件

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: 115 ::
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