Question

I have a form with 3 tab controls on it, and each tab control has a dozen or so text fields. Right now I have all of my methods for modifying the text fields within Form1.cs, which is working, but is a very long class. I am curious if it is propper method to keep methods that call Form controls within that forms class, or if you should divide them out into other classes? I read this thread and I may be confused, but it sounds like the chosen answer is saying you should not try to access form controls from other classes?
How to access form methods and controls from a class in C#?

Answer 1

The best method for encapsulation in this scenario is to create user controls that contain the text fields for each tab. Then, each tab just has a user control on it, and all the logic specific to those fields is encapsulated in its own control.