title: In flex, is there a way to capture and optionally cancel a row selection event in a DataGrid?
body: <p>This should be trivial, but I can't seem to figure out a way to do this. </p>
  
  <p>I have a DataGrid, and what I would like to do, is when a user clicks on a row to select it, check a certain condition, and if it's met prevent the row from getting selected and keep the old selection intact. </p>
  
  <p>Thanks!</p>