Data from UI dialog to MVC controller
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I have problem with my web application. I am using MVC3 and not so familiar with it.

I am making functionality for the user to choose application papers to print. I have functions that return stream for the pdf files. But sending data form UI is the trouble. On the page there is button [print] when i push it an UI dialog appears with checkboxes for the user to choose applications. The confirm button should be confirmation on printing. 

I am having problem sending data to my controller and return new tab/window with the pdf. I need to send 3 variables to the controller. String that keep info about what to print, id of user and one other variable. I´ve tried AJAX but thats not working. It seems that with AJAX i cannot return pdf in another tab (please correct if i am wrong)

Can someone give me an idea how i can solve this problem? Good solution to send data from dialog window to controller so i can return pdf files in new tab or window. 