初识 Asp.Net内置对象之Application对象

8/10/2015来源:ASP.NET技巧人气:4057

初识 asp.net内置对象之application对象

Application对象

Applocation对象用于共享应用程序级信息,即多个用户可以共享一个Applocation对象。

用户在请求Asp.Net文件时,将启动应用程序并且创建Application对象。一旦Application对象被创建,就可以共享和管理整个应用程序的信息。在应用程序关闭之前,Application对象一直存在,所以Application对象是用于启动和管理ASP.NET应用程序的主要对象。

Application对象常用集合

集合名
Contents用于访问应用程序状态集合中的对象名
StaticObjects确定某对象指定属性的值或遍历集合,并且检索所有静态对象的属性

Application对象常用属性

属性
AllKeys返回全部Application对象变量名到一个字符串数组中
Count获取Application对象的数量
Item允许使用索引或Application变量名称传回内容值

Application对象常用方法

方法
Add新增一个Application对象变量
Clear清除全部Application对象变量
Lock锁定全部Application对象变量
Remove使用变量名移除一个Application对象变量
RemoveAll移除全部Application对象变量
Set使用变量名称更新一个Application对象变量的内容
UnLock解除锁定的Application对象变量

1.用Application实验一个访问计数器

主要用来记录应用程序曾经被访问的次数的组件。主要通过Application对象和session对象来实现,我们在昨天的项目添加一个Global.asax文件,具体代码如下:

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