Programmatically initiate file selection window on igUpload widget

Let's pretend we have to make a simple web page that allows users to upload files on the server.
When a user arrives on the page, the files selection window has to open automatically.
The user has to be able to select and upload multiple files at once.

igUpload control does fit nicely in this scenario.

Unfortunately, I didn't find a way to programmatically display the browse window to select a file for upload, without having to click the Upload File button. I'm using Ignite UI 13.2, which documentation could be found here and there is a related question from Infragistics forum here.

I've seen few examples, where overrides of private methods are suggested in order to modify default behavior, but currently, I couldn't find the appropriate place to intervene.

Solution

igUpload is using <input type="file"/> and in most browsers it is not allowed opening file selections window( via javascript ) because of security reason( Trigger a file input to open via javascript) . Probalby only IE allows you to achieve this - you can try:

var id = "upload";
$('#' + id).igUpload();
setTimeout(function () {
    $('#' + id + '_ibb_fp').click();
}, 0);