What is the Purpose of Console.WriteLine() in Winforms

What is the Purpose of Console.WriteLine() in Winforms

I once saw the source code of a winform application and the code had a
Console.WriteLine();. I asked the reason for that and i was told that it
was for debugging purposes.
Pls what is the essence of Console.WriteLine(); in a winform and what
action does it perform because when i tried using it, it never wrote
anything.