title: Correct way to implement C# console application?
body: <p>What is the correct way to implement and architect a command line tool as a C# console application?</p>
  
  <p>Concerns to address include proper parsing of command line variables, and the proper way to output text.  While Console.WriteLine() is the most obvious choice for output, what are the circumstances in which one should instead opt to write to the standard error stream, .Error, .SetErrorStream, etc?</p>
  
  <p>What is the proper way for the application to exit while returning a proper return code to the calling command?</p>
  
  <p>How should the the CancelKeyPress event be implemented to interrupt the program? Is it only for use when an asynchronous operation is occurring on a separate thread?</p>
  
  <p>Is there a concise guide to command line tool programming in C#, or even better an open source project or template which I could use to properly implement a relatively simple tool?</p>