Hi Jonathan,

From your description, you have web page that use 3 webforms on it and have
problem to get all the form data in those forms when submitting the page,
correct?

Based on my understanding, ASP.NET web page should restrict the server-side
webform <form runat="server" >  to only one on a single page.  Is the other
two forms on your page normal  client <form> without runat="server"?  

Also, as for the form data lost when submitting page, it is the expected
behavior(a html page behavior). When you do submit, html page will only
carry the form data on the exact form which raise the submit operation, the
data in other <form> won't get submitted.  

BTW, would you provide some more information or background about why you
will need multiple forms on a single page or is it possible that we combine
them in single form?

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead

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