I am using .Attributes["src"]="form.aspx" to insert a form into a table cell of page1.aspx. I want form.aspx to post to page1.aspx but even when I declare action="page1.aspx" in form.aspx's form tag it posts to itself. I looked at the source and in the form tag it had form.aspx as the action. What do I have to do to get form.aspx to post to page1.aspx?

Use a standard postback on the page, then do a Server.Transfer to the desired page. This will serve basically the same purpose. All the posted form values will be available but you'll need to use Request.Form to get at them instead of using member control instances.

-Peter

I don't think that will work because the form action is being reassigned at runtime by VS.

I pulled runat="server" and the child form retained the assigned action. Now it's opening a new instance of the whole project in the iframe. And the page.ispostback is being ignored, bypassed or reset.

Did you try it? The .NET runtime is setting the form action to the same page so that the webform will work using the postback method. That is my whole point. Let it do a regular postback. Then change the behavior on the server processing by transferring page execution to the other page you want to go to.

-Peter