FileUpload control inside an UpdatePanel without refreshing the whole page?

Question

According to Microsoft the FileUpload control is not compatible with an AJAX UpdatePanel.

I am aware that a PostBackTrigger can be added to the submit button of the

Answer 1

The button that is triggering the upload event needs to have UseSubmitBehavior property set to false:

clsUploadButton.UseSubmitBehavior = False;