title: how to check if 2 files are equal using .NET?
body: <p>say i have a file A.doc.<br>
  then i copy it to b.doc and move it to another directory.<br>
  for me, it is still the same file.<br>
  but how can i determine that it is?<br>
  when i download files i sometimes read about getting the mda5 something or the checksum, but i don't know what that is about.</p>
  
  <p>Is there a way to check whether these files are binary equal?</p>