title: How to get rows collection based on selected cells in DatagridView
body: <p>I have a DatagridView control on a Windows form. It's selectionMode property is set to CellSelect. <br>
  I want to operate on DatagridViewRow based on selected cells. The DataGridView control is bound to a DataSource.</p>
  
  <p>How to get the Row collection based on selected cells ?</p>