User can upload multiple files at a time . This application does not storing the file in database.Instead of storing in database , it stores the file in local file record list variable.
I have attached a snapshot a the component. Using that download icon user can download the uploaded file for previewing purpose and also User can delete the selected file from the selected file record list.
I have uploaded a demo.If you stuck at any point then please check out the demo
It is very simple asset .Use the FileReader block and File structure in you screen . It does not take any input from user.It will just return the selected files.So just put a handler for the FileReader block.
If you stuck at any point please check out Multiple File Reader Demo.