How to delete or replace the uploaded file

I’ve created a page which can upload and download a file as per following procedure: Now, I wanted to delete or replace the uploaded file. How can I do that?  
1 answers

In the last few steps on that page you create a list view where people can download the files you've uploaded. One way to do this would be to add a delete button to that list view, for instance. If the delete button ends up being invisible to your users, make sure they have the appropriate rights to delete files as well.