title: closedxml to datatable without looping
body: <p>at work I've used closedXML in the past to go from a datatable or dataset to excel extremely quickly without looping. Now I need to go the other way but the only documentation I can find on closed XMl or anything else to go from excel to datatable is to loop. I can't imagine with the current demand for speed, the large amounts of data that can go into excel and the widespread use of Office that nobody has figured out a faster way than looping.</p>
  
  <p>Is there a way in closed XML or another reasonably sized, safe library that quickly moves excel to datables or other system.data objects such as datasets  without looping?</p>