Web form

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When I have to reload the second web page is says there is an error with the contex handler. It is expecting a WebForm1.class not the WebForm2.class

What kind of error are you getting? Please specify

Thanks, but when I use Context Handler, I keep getting errors when the second page is loaded next time

You can use jQuery to load a page content inside a div or some other container and as a popup also. Since you are loading the form, input collected on that form will be there and your sending data problem also get resolved.
Secondly, you achieve it in asynchronous mode, so give  good feel also.