title: (C#) How to read all files in a folder to find specific lines?
body: <p>I'm very new to C# so please have some extra patience. What I am looking to do is read all files in a folder, to find a specific line (which can occur more than once in the same file) and get that output to show onscreen.</p>
  
  <p>If anyone could point me in the direction to which methods I need to use it would be great. 
  Thanks!</p>