the previous page of the user

[davikokar]

hallo,

For example: I am in the page A of my web application, then I click a link and navigate to page B. Now I click a linkbutton in page B. Is there a way to know that the user that pushed a button in page B, came from page A ?

Thanks for advice

 

[jbenson001]

You will only know what page the user came from on the first hit of PageB. (Request.URLReferrer). Once you hit a button on Page B, it causes a post back, and the Referrer is now Page B.

 

[jmeckley]

to track this you would need to implement a custom logging solution to track each url hit and the order they happened. building it is easy enough with an audit table and http module.

audit_trail (
   Id bigint not null,
   SessionId varchar(1000) not null,
   Url varchar(1000) not null,
   Referrer varchar(1000) null,
   User varchar(50) not null,
   VisitOrder bigint not null,
   DateOfVisist datetime not null,
   primary key (Id)
)

public class AuditTrail : IHttpModule
{
    public void Init(HttpApplication context)
    {
        context.BeginRequest += LogVisit;
    }

    public void Dispose(){ }

    private void LogVisit(object sender, EventArgs e)
    {
          var context = HttpContext.Current;
          var sessionId = context.Session.SessionID;
          var url = Context.Request.Url.ToString();
          var referrer = Context.Request.UrlReferrer.ToString();
          var user = Context.User.Identity.Name;
          var visit = DateTime.Now();
          var visitOrder = GetNextVisitIncrement();

          //now save this data back to the database.
    }

    private long GetNextVisitIncrement()
    {
         //query database
         select top 1 VisitOrder from audit_trail where [User] = @user order by VisitOrder desc;
         // map row to Visit object and return
         if(no rows exist) return 1;
         return Convert.ToLong(row["VisitOrder"])+1L;
    }
}

Jason Meckley
Programmer
Specialty Bakers, Inc.

faq855-7190
faq732-7259

 

[jmeckley]

it should go without saying, but just incase... you could then use this table to query for "previous" page.

Jason Meckley
Programmer
Specialty Bakers, Inc.

faq855-7190
faq732-7259

 

[ca8msm]

Also bear in mind that the referrer may not always exist and can be modified.

Mark,

Darlington Web Design
Experts, Information, Ideas & Knowledge
ASP.NET Tips & Tricks