Hi all,

I'm using AsyncUpload with RadAjaxManager and RadBinaryImage to upload images, and preview them immediately in the page, before the Page Postback. This works fine, the preview works very well; I used the exact same setup as is shown in the "Ajax processing" sample.

However, I'd like to know which file was uploaded, when my page is posted back properly by the user. Unfortunately, the AsyncUpload1.UploadedFiles collection is empty. If I disable the RadAjaxManager.ajaxRequest() call (thereby disabling the preview), the UploadedFiles collection does work.

Is there a way to let these techniques work together? How can I retain info about the uploaded files until postback?

Thanks for any info.

Hi Jean-pascal van der endt,

We've already answered to you in the other support thread, but I will share the answer here as well, for community reference.

The uploaded files are being preserved into the UploadedFiles collection only until the first postback. Since, you are doing async postback when you update the RadBinaryImage, the UploadedFiles collection is being cleared after this, because, it is expected that the files are going to be processed only ones. The good news are that, you can save the file's file name and folder inside a session object, and the access it when needed.

Kind regards,
Genady Sergeev
the Telerik team