Hello,
I have a table in the database containing "files".
I don't know their filetype.
I need to export some stuff (including these files) and be able to import them into the same application.
So I was thinking about saving the byte array as data.dat (unknown extension).
and when importing just making a byte array from that file and putting it back into the database.
Will this work?
The extension doesn't influence on the data itself, just the app that will be launched by default when you double-click on it. Yes, it will work.
Just be aware that you should validate the file when importing it to your app.
Yes, file extensions are only a clue as to the format/purpose of the file, but don't really mean anything.
From the computer's point of view it doesn't care at all what a file is called (Windows just uses them to associate applications with their files so you can open them by double-clicking).