Freelancer:
gzperra
Người chiến thắng
GZPERRA - Native Viewer App v0.1
Hi, although a winner has been chosen (and I don't know why?!) but here's my app. It's satisfying all the requirements and written with C#/.NET Framework. And I still offer further support :). GIF: https://imgur.com/a/SQMQYLF.
