[Tunabish]

Hey guys, I have 2 lists, 1 of them is a schedule, which contains a list with exercises.
I want to save those in a database and load them back on startup.
I made it with with only schedule names, but the part where I start adding exercises to the schedules doesn't work, and now I'm getting an error at line 80

Code

System.IndexOutOfRangeException: 'Index was outside the bounds of the array.'

This is my database class
pastebin.com/m1hKH8i7

Hope someone can help me out with this problem c:

[HFDone]

if it this line probably type mistake theres no query exName fix it
var columnA = reader["exName"]?.ToString();

[Tunabish]

Solved the problem, thanks anyway c:

[arvustpremium]

If you need anymore help don't be afraid to PM me.
Is this a college assignment?