取得页面执行时间的代码

在Global.asax.cs文件中　

protected void Application_BeginRequest(Object sender, EventArgs e)
{
Application["StartTime"] = System.DateTime.Now;
}
protected void Application_EndRequest(Object sender, EventArgs e)
{
System.DateTime startTime = (System.DateTime)Application["StartTime"];
System.DateTime endTime = System.DateTime.Now;
System.TimeSpan ts = endTime - startTime;
Response.Write("页面执行时间:"+ ts.Milliseconds +" 毫秒");
}