如何运用内置对象session和application对象实现统计在线人数
首先创建一个全局应用程序类Global.asax
protected void Application_Start(object sender, EventArgs e)
{
if (Application["CountOnline"] == null)
{
Application["CountOnline"] = 0;
}
}
//设置session对象，生存时间为1分钟
protected void Session_Start(object sender, EventArgs e)
{
Session.Timeout = 1;
int countOnline = (int)Application["CountOnline"];//获取在线人数
countOnline++;
Application["CountOnline"] = countOnline;//设置当前在线人数
}
//会话对象销毁的时候，Session对象减1
protected void Session_End(object sender, EventArgs e)
{
int countOnline = (int)Application["CountOnline"];//获取当前在线人数
countOnline--;
Application["CountOnline"] = countOnline;
}
其次在页面中绑定
<div>
当前在线人数为：<%=Application["CountOnline"] %>
</div>
