No, but I've used vscode. When using Linux it's quite difficult debugging c# cause you have to use mono. And, if it's not set up correctly you can't even see the variables or values. Additionally, when using leetcode's debugger it's the same so I tend to write in java to debug and then convert it to C#. Yes, it was required for my 440 database class. We had a final that was delayed because my teacher didn't give out the data until two weeks before it was due. But requirements were a full database with keys minimized to 3NF. Then he proceeded to insult me.