send file via form and get results into grid

Hi

Can anyone give me an idea of how I may achieve the following?

I have an application whereby I need to upload a csv file with data (posted from a form of course) and then this is enriched on the server side before sending the results back to a store which is linked to a grid...

I can submit the form and that will send the data back, but then how do I get the results back into a store?

However my brain can't think of how I post the form data through the store. I am sure it is really obvious...

Thanks in advance

send file via form and get results into grid