CODEWITHSUNDEEP
asp.netcross-page-postback
bech
bech

Reputation: 637

PreviousPage is null on one machine, not on the other

I have a website with a page that does a crosspage postback using an ASP:Button with a PostBackUrl as such:

<asp:Button ID="FindButton" runat="server" Text="Find" CssClass="button" PostBackUrl="~/TGS/BusinessResults.aspx"  meta:resourcekey="FindButtonResource1" />

I do not need information about the previous page other than PreviousPage.IsCrossPagePostBack, so adding a PreviousPageType should not be neccesary.

Problem I have two machines, one laptop and one desktop. My code works as intended (PreviousPage is not null) on the laptop, but PreviousPage is always null on my desktop with identicical code.

I have the same Visual Studio 2010 installations with the same .NET versions (Used System.Environment.Version to check) on both machines.

Any thoughts?

Edit: as an update, this is no longer neccesary - I fixed my issue (which doesn't really have much to do with this) in a different matter - but as always; i'll include my solution:

I was using some Response.Write to write a loading gif to a website while the actual page loaded, and this messed up some form related things.. I included a base target to the header of the loading gif html and that solved my problem of all links opening in new images.

Upvotes: 3

Views: 254

Answers (1)

David W
David W

Reputation: 10184

A null PreviousPage can be caused by a transfer that might be induced through an intervening Web proxy or perhaps a caching appliance inline with the desktop, but not the laptop. I'd pull a Net Monitor and/or ProcMon trace to see if anything like this might be at play. Hope that helps in some way.

Upvotes: 1

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