Web Forms :: Catching Form Postbacks With Masterpages And Usercontrols

Jan 23, 2011

I have a website that serves all its pages using a single 404 page. it displays hotel profiles form business and depending on different profile levels offers more or less functionality and information.

Through the DB a masterpage is selected and usercontrols are applyed to that.

I have a contact page like this : 404.aspx > masterpage.Master > contact.ascx

My form action looks like this default.aspx?404%3bhttp%3a%2f%2fwww1.testsite.co.uk%3a80%2fcontactus

and when I click the button this where I send up with an error "Validation of viewstate MAC failed" error.

I have read stuff on these for 4 hours but still have no idea where to start.

Do I need to

Catch the form action URL (postback URL) in the baseclass and change it back to [URL] - If I do this are the form firled values still intact

Do i need to do something to change the form.action url before the page is built, if so is this done in the masterpage preinit event as this is what the form tag is

What I know works is that the usercontrol is aware of the postback, but not the form values.

I want to be able to add a 404 based contact us form on any one of 1000s of profiles and be able to catch the values. Idearly I would like to do this in the codebehind of the usercontrol as this keeps the code seperate

I am sure this must be possible and normally I can work stuff out, but here I am totally stuck. I am trying to do this in VB.

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