Standard or expected behaviour after file is added

I know that there is a very similar question to the question that I am asking here:

Expected behaviour after file upload

So I will do my best to highlight the difference.

What I am referring to is the file add button that is often seen as part of a file upload form (or dialog) and the behaviour it should have. I would like to know if it is standard behaviour to also upload the file automatically when you click on Add File (is this the expected behaviour from a user) under a couple of different scenarios. Obviously if there is another button for uploading the file then the Add File button would also serve this purpose.

So what is the expected user behaviour (and UI interactions) when:

  1. there are multiple files to be added
  2. there is no upload button visible

Are there other scenarios that I haven't considered?

Tags: