title: Get a SqlControlSource to pass a parameter from a devexpress grid
body: <p>I am creating a SqlDataSource connected to a stored procedure that needs parameters. I have connected my SqlDataSource to a ASP.NET devexpress grid and would like to use a combo box drop down from the grid to be the parameter to the SQLDataSource Parameter source Control. I can see other controls in the list but not any from the grid.<img src="https://i.stack.imgur.com/PAhpi.png" alt="Screen Shot"></p>
  
  <p>How can I get a Combo Drop down to be the control for the parameter? I am using VB.Net</p>