CODEWITHSUNDEEP
asp.net
Subin Jacob
Subin Jacob

Reputation: 4864

Is there any built in Events in asp.net which triggers for all PageLoads?

After Completing My asp Project I came up with a new requirement. For this, I have to Execute some code in all page Load events. Can I get an event for all those page loads? I can't use Session_start of Global.asax since it will include WebHandlers with Session State. Any Ideas?

Upvotes: 0

Views: 141

Answers (3)

Egor4eg
Egor4eg

Reputation: 2708

I think the best solution here whould be to create a custom base page class which implements PageLoad and then inherit all your pages from it.

Something like:

public abstract class BasePage: Page
{
   protected void Page_Load(object sender, EventArgs e) {
      // your code
   }
}

You can register base page class in web.config:

<system.web>
  <!-- ... -->
    <pages pageBaseType="MyWeb.UI.BasePage" />
  <!-- ... -->
</system.web>

Upvotes: 0

CountZero
CountZero

Reputation: 6389

Session start would not be suitable as it will only be fired when a users is given a new session rather than each time a page is loaded.

There are several options, including using a base page which all of you pages inherit from. This will mean you need to remember to hook this up to all pages.

My suggestion would be to write an http module which is fired for all aspx page loads.

You will need to create a module which implements System.Web.IHttpModule. 

using System;
using System.Web;
public class HelloWorldModule : IHttpModule
{
    public HelloWorldModule()
    {
    }

    public String ModuleName
    {
        get { return "HelloWorldModule"; }
    }

    // In the Init function, register for HttpApplication 
    // events by adding your handlers.
    public void Init(HttpApplication application)
    {
        application.BeginRequest += 
            (new EventHandler(this.Application_BeginRequest));
        application.EndRequest += 
            (new EventHandler(this.Application_EndRequest));
    }

    private void Application_BeginRequest(Object source, 
         EventArgs e)
    {
    // Create HttpApplication and HttpContext objects to access
    // request and response properties.
        HttpApplication application = (HttpApplication)source;
        HttpContext context = application.Context;
        string filePath = context.Request.FilePath;
        string fileExtension = 
            VirtualPathUtility.GetExtension(filePath);
        if (fileExtension.Equals(".aspx"))
        {
            context.Response.Write("<h1><font color=red>" +
                "HelloWorldModule: Beginning of Request" +
                "</font></h1><hr>");
        }
    }

    public void Dispose() { }
}

Then hook it up in the web.config as per the example here. 

<httpModules>
  <add name="HelloWorldModule" type="HelloWorldModule" />
</httpModules>

You would need to check the context.Request.Path property in the module to exclude any request where the path did't meet your criteria (i.e. not ending aspx).

More info here. https://web.archive.org/web/20200618051219/http://www.4guysfromrolla.com:80/demos/printPage.aspx?path=/articles/011404-1.aspx

Upvotes: 1

user2007801
user2007801

Reputation:

You keep a Base Page and Inherit it from all aspx pages. In this way you can keep the logic centralized.

Example

Aspx Page

public partial class MyAspxPage : BasePage
{

}

Base Page

public class BasePage : Page
{
    protected override void OnLoad(EventArgs e)
    {

    }
}

You should also leave AutoEventWireup set to false.

Upvotes: 2

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