How to return data when a file is uploaded with igUpload control

I'm using upload control in the following manner:

uploadContainer.igUpload({
        mode: 'multiple',
        multipleFiles: true,
        maxSimultaneousFilesUploads: 2,
        maxUploadedFiles: 2048,
        labelUploadButton: "Choose File",
        labelAddButton: "Choose File",
        labelClearAllButton: null,
        autostartupload: true,
        onError: function(e, args) {...some function...},
        fileUploaded: function(e, args) {...some function...},
        allowedExtensions: ['dwg', 'DWG']
    });

Current user, when arrives on the page, could upload a file.
After uploading, he expects some information to be returned from uploaded file.I have to display list of layouts of the dwg file per example.
Into my upload handler class at the back-end, "FinishedUpload" method is called. There, I'm reading the file, extracting some information from it and I want to return this information back to the front-end.

How to accomplish that? Any ideas are welcomed!

Thank you!

Solution

The information to send additional data to the server Upload MVC Wrapper and the igUpload control on the client and vice-versa will be available in the Ignite UI June 2015 service release.

What you can do currently is to handle the client-side fileUploaded event and send an additional Ajax request to the server to get the data you want.