Create a class library that establishes the following classes:
Copy CodeThe code is as follows:
Using System;
Using System.Collections.Generic;
Using system.web;//references Web namespaces
Using System.Text;
Namespace Timerhttpmodule
{
public class class1:ihttpmodule//Inheritance Ihttpmodules
{
public void init (HttpApplication application)//To implement the Init event in Ihttpmodules
{
Subscribe to two events
Application. BeginRequest +=new EventHandler (application_beginrequest);
Application. Endrequest+=new EventHandler (application_endrequest);
}
Private DateTime StartTime;
private void Application_BeginRequest (object sender, EventArgs e)
{
Object sender is beginrequest passed over
Which is stored in the HttpApplication instance.
HttpApplication instance contains HttpContext attribute
StartTime = DateTime.Now;
}
private void Application_EndRequest (object sender, EventArgs e)
{
DateTime endtime = DateTime.Now;
HttpApplication application = (HttpApplication) sender;
HttpContext context = Application. context;
Context. Response.Write ("<p> Page Execution Time:" + (Endtime-starttime). ToString () + "</p>");
}
The Dispose interface must be implemented
public void Dispose () {}
}
}
After the build, copy the DLL file to the bin directory, and then register the HttpModule in Web.config:
Copy CodeThe code is as follows:
<configuration>
<system.web>
<add name= "Timerhttpmodule" type= "Timerhttpmodule.class1"/>
</system.web>
</configuration>
This will display the page execution time at the bottom of each. NET page of the site.
Be careful, though, because each. NET page is followed by execution time, including the WebServices and ashx pages, and the. aspx pages that you may not be using to directly do the page (for example, you use to enter JSON data or XML data). Therefore, in order to ensure security, we must also adopt a targeted approach to avoid this situation.
Method One: Before the Response.Write method makes the judgment, excludes some does not want to add the execution time the page, may judge by the Request.url;
Method Two: Do not add execution time directly to the end of the page output, but as an HTTP header output. Use Response.AddHeader (key,value) to achieve this desire.
