I need the user to navigate their local network for a file, but when that file is selected I need to execute against those results immediately and not be returned to the UI and await the click of a secondary button. All the examples that I'm seeing use the File Upload UI element and then have a companion "upload" button that takes the results stored in the FileUpload control and then does something with it. What I need is to return from the File Upload selection and immediately use the results. Seems like a simple request but I'm not able to find anything on the web to support it 
Hoping I just haven't asked the question properly and somebody has an easy answer.
Thanks,
Chad