title: organizing gui code in c#
body: <p>what are the best ways to manage code in a single-form app that has many different components? for example, think of a financial app that has a product picker for browsing/choosing a product to view; a handful of real-time tickers for prices, interest rates, or whatever; a scrolling news feed; various charts; a grid displaying locally calculated values; etc.</p>
  
  <p>would you create a custom control for each distinct component, even if they're not going to be used outside of this app? or could you do it with classes that implement the logic for each component and somehow update that actual control in the gui? two components may need to interact with each other, e.g. you click a cell in a grid, and it brings up some chart (would the main form handle sending the message?)</p>
  
  <p>I have a habit of letting form code get bloated as features are added and I really want to get familiar with a better way. I'm working with c# (not using WPF) but I guess basic design principles aren't necessarily language-specific.</p>