Question

If I have a method with a using block like this…

    public IEnumerable<Person> GetPersons()
    {
        using (var context = new linqAssignmentsDataContext())
        {
            return context.Persons.Where(p => p.LastName.Contans("dahl"));
        }
    }

…that returns the value from within the using block, does the IDisposable object still get disposed?

Answer 1

Yes it does. The disposing of the object occurs in a finally block which executes even in the face of a return call. It essentially expands out to the following code

var context = new linqAssignmentsDataContext();
try {
  return context.Persons.Where(p => p.LastName.Contans("dahl"));
} finally {
  if ( context != null ) {
    context.Dispose();
  }
}