title: C# text file - how to write EOF character
body: <p>This has got to be an easy question but I'm not finding anything out there.</p>
  
  <p>I have a text file. I need to put a EOF character at the end so a third party vendor can read the file correctly.</p>
  
  <p>What is the escape character needed to write the end of file character?</p>
  
  <p>I'm not sure if I need to supply any more information, but if I do, let me know.</p>
  
  <p>Thanks</p>