title: How to get value of a cell in row data bound event? and how to check if a cell is empty?
body: <p>I'm using sqldatasource and a <strong>GridView</strong>.
  I want to get the value of a cell from the GridView in the <code>RowDataBound</code> event?, Because I can't use <code>e.RowIndex</code>.</p>
  
  <p>How to check in the updatng event if a cell is empty?
  I used <code>if != null</code>, but it didn't worked so I need to check if it's empty.</p>
  
  <p>thanks</p>