(1) The man from whom I got the pen.
  
  (2) The man from I got the pen.
  
  (3) The man I got the pen from.
  
  (4) The man whom I got the pen from.  


Could you please show me if they are correct, if not would you correct me?

Many thanks


Question: Directory.GetFiles string gives an error
Answer: There are two potential issues here.


If you doing have using System.IO; in your file, the Directory class will not be found by the compiler.
The way you're specifying your path ("images/movies") will be relative to the current working directory, which is likely not the proper directory.  You should use Server.MapPath or the Path class to build a full path to the proper folder, so you can specify the correct folder with a full, absolute path.