title: reading a empty cell, gives object reference error
body: <p>When I read a cell by doing
           Worksheets.Cells[2,5].value.ToString();</p>
  
  <p>I get a error "System.NullReferenceException: Object reference not set to an instance of an object."</p>
  
  <p>What would be a good way to check for null and then assign the value, without having to have a "if" statement.</p>