Say I have a form Main.cs, and it has a series of buttons and controls on it. Now generally it is good practice to create a class file for everything that is being handled, for example I have a serial port Icon, when I click in the main form, it should start the serial port communications. In this button click, it should call the Serial port Class (which I should mention is a file in its own), and I will have a series of these classes which are on their own separated from Main.cs (which will just be in general empty).
So what I would like to know is there a way to access the controls in the Main form like buttons and Text boxes and the likes from any of the class files that I will create????