Ado.net naming convention and standards

public void updateProjectData(ProjectsEvent message)
        {
            

            MySqlConnection update_connection = new MySqlConnection("server=localhost;database=my_project;port=3306;uid=root;password=;AutoEnlist=false");

            try
            {
                string sql = "UPDATE  `my_project`.`projekte` SET  `desc` =  '"+message.prj_description+"' WHERE  `projekte`.`ID` ="+message.RecordID+";";
                //sqlQuery2 = "update projekte set desc = '"+ message.prj_description.ToString()+"' where ID = " + message.RecordID + "";

                update_connection.Open();
                MySqlCommand command1 = new MySqlCommand(sql, update_connection);
                command1.ExecuteNonQuery();
                update_connection.Close();

            }
            catch (Exception e)
            {
                throw e;

            }
        }