title: Member 'DALfile.tocity(string)' cannot be accessed with an instance reference; qualify it with a type name instead
body: <p><code>Member 'DALfile.tocity(string)'</code> cannot be accessed with an instance reference; qualify it with a type name instead.</p>
  
  <p>I'm new in C# and I don't know what does it mean and how to get rid of it...</p>
  
  <p>Could anyone please help me?</p>