title: In C#, how would I use a delegate to manipulate a form from a custom class I made?
body: <p>I know how to manipulate a textbox on a Form, from a Form, but I do not know how to manipulate a textbox from a CLASS in it's own file to a Form.</p>
  
  <p>Can someone explain to me how I would write a Delegate &amp; a CallBack so I could simply call a method from a Class in a different file, and change stuff on a textbox from a different form?</p>
  
  <p>I don't see how I could explain that any better. Thanks for any help!</p>