Iterate though directory files and submit each file as form-data payload

Here’s an outline with best practices for making your inquiry.

I am trying to send multiple files with same filetype within the same directory as form-data:

Details (like screenshots):
We have multiple .dat files within same directory and would like to use postman to iterate through directory and send one file at a time as form-data > body .

Is there a way to do this ? preferably without newman but if you have any solution with newman I will take that as well.

I’ve already tried:
I have already tried collection runner and tried searching this issue in Github as well as stack-overflow and here in the forums but am not able to find a solution which may satisfy our requirements.

I’m not sure Postman is the right tool for this type of activity.

I would probably use PowerShell and Invoke-WebRequest (or something similar).