Let your users upload single or multiple files with item selection or drag and drop. Use Upload widget to upload on a postback or the AsyncUpload to do it via AJAX. Events triggered by the HTML5 kendoUpload are easily handled via a console log. Lastly, leverage the built-in file size and extension validation.
The Upload widget can be used as a theme-able and customizable replacement for file input elements. Allow your users to upload files to your server asynchronously. This means multiple files can be selected and uploaded on their own, without the need to wait for all to be selected.