title: How to fill a combobox when a row in a dbgrid is selected?
body: <p>In Delphi 2007 I have a DBGrid. I need to fill a ComboBox when a row in the DBGrid is selected. The data in the the ComboBox depends on the selected row, and can be different for each selected row.</p>
  
  <p>The DBGrid contains products orders. When an order is selected, I need a ComboBox to be filled with batch numbers of the product in the order. This batch number is saved in the order record, when the order is executed.</p>
  
  <p>I could not find a onSelect or onChange event, which I could use to do this.</p>
  
  <p>So how can I do this?</p>