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First of all thank you both for the advices I am starting to see the bigger picture. so I should firstly remove the -1 now for what you said @JohnH could you please be a little more specific?

Hello i am new to c# and trying to create some simple programs and one of those is a randomized playlist for spotify. When I run the code I get this error: "Unhandled exception. System.ArgumentOutOfRangeException: Index must be within the bounds of the List. (Parameter 'index') at...