title: What files do C# programs execute first?
body: <p>I'm trying to understand a massive application that was written by other developers.</p>
  
  <p>I want to know, of all these <code>.cs</code> files, which one would be executed first, so I know how to trace through and set breakpoints.</p>
  
  <p>There are about 25 of these <code>.cs</code> files, but I'm not sure where to start. Which one would be executed first?</p>