//这样取到的myDropDownList就是StateList,其他自己再根据需要操作吧
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
        if (e.Row.RowType == DataControlRowType.Pager)
        {  
            DropDownList myDropDownList = (DropDownList)e.Row.FindControl("StateList");        }
}