Why when I select pictures 1 to 10, does Paint.NET order them capriciously?

Why when I select pictures 1 to 10, does Paint.NET order them capriciously?

Knowing Microsoft orders files funny when you name then file1 or file01, I
named a bunch of screenshots ant001, ant002, ... ant009 using Irfanview
batch renaming commands.

In Windows file explorer, I selected the first file ant001:
http://www.bild.me/bild.php?file=686...mbertest01.jpg

And then held down the shift key to select the last file, ant009, which
selects all nine files.
http://www.bild.me/bild.php?file=890...mbertest02.jpg

I right click on any one of them to "Edit with Paint.NET":
http://www.bild.me/bild.php?file=700...mbertest03.jpg

But when Paint.NET comes up, they're in a seemingly capricious order.
ant008, ant005, ant003, ant006, ant009, ant004, ant002, and007, and001
http://www.bild.me/bild.php?file=731...mbertest04.jpg

This capricious ordering happens day in and day out, no matter what, which
makes sequential screenshot editing a pain for no good reason (AFAIK).

Since I wish to edit them in sequence to document an Android to iOS file
transfer, I have to manually reorder them within Paint.NET.

What trick am I missing for loading them into Paint.NET in correct order?

NOTE: It's not a big deal with 9 files, but try this set of 400!

Why when I select pictures 1 to 10, does Paint.NET order them capriciously?