Re: Session variables problem

From: Simon Matthews (SimonMatthews_at_discussions.microsoft.com)
Date: 12/01/04 

Date: Wed, 1 Dec 2004 09:55:01 -0800

Prodip,

Thanks for the quick reply. I will look at giving this a try but I think
that it may still have the same problem when users return to an earlier page,
would the first page class still be available at this point, if not I will
get the same problem I have now.

Simon.

"Prodip Saha" wrote:

> One of the alternative architechture you can consider is - exposing public [shared] properties on the First page (where the search button located) and call them from the second page. In ASP.NET every form assocaited with a class and it can be called from any other classes. This way we don't have to use query string like we had to use in asp applications.
>
> Take a look at this link - http://authors.aspalliance.com/aspxtreme/webapps/passingcontrolvaluesbetweenpages.aspx
>
> Problem with this approach: when you want to come back to search page what criteria do you bring back from second page to first page? One way to accomplish this is - exposing public [shared] properties on second page and call them from the first page.
>
> Microsoft also has documentation on this but I could not find it find handy. Hope this help.
>
> Prodip Saha
>
>
> "Simon Matthews" <SimonMatthews@discussions.microsoft.com> wrote in message news:A935A4AB-6BF9-436A-9C24-C68BF625F179@microsoft.com...
> > I am having issues with the right way to architecture the following (using c#
> > asp.net):-
> >
> > The question I have is how best pass the collected data from one web page
> > for use in another.
> >
> > The question I have is how best pass the search criteria from the first page
> > to the second. The search criteria exists as a structure and is filled when
> > the user presses the 'Search' button on the first page.
> >
> > 1. Present an asp page for collecting user search criteria
> > 2. Show grid with results of search after querying SQL
> >
> >
> >
> > If I use the session to store it, then this causes problems as the session
> > variable is overwritten on a second search by the user, but a couple of
> > presses on the back button of the browser will get you to a page expecting
> > different criteria in the session from earlier which is no longer there.
> >
> > ViewState seems no good as it only works on postback and the above issue
> > would still cause a problem.
> >
> > I do not want to pass the search criteria in the address line as this is
> > messy and allows the user to change and view it.
> >
> > I beleive you can also use Server.Transfer but I think this would have a
> > similiar issue with the data being available long-term.
> >
> > Any pointers as to the correct approach to this would be most welcome