Using multiple dropdownlist in gridview control

//Find the Footer Row or EmptyDataTemplate
Control control = null;
    if (GridView1.FooterRow != null)

    {
        control = GridView1.FooterRow;
    }
    else
    {
        control = GridView1.Controls[0].Controls[0];
    }
//Find the other DropDowns here
    DropDownList ddl2 = (control.FindControl("ddl2") as DropDownList);