public static void insert_order_master(order_master_model order)
    {
        My_Connection conn = new My_Connection();

        SqlParameter [] p = new SqlParameter[4];
        p[0] = new SqlParameter("@session_id", order.session_id);
        p[1] = new SqlParameter("@order_no", order.order_no);
        p[2] = new SqlParameter("@order_date", order.order_date);
        p[3] = new SqlParameter("@order_status", order.order_status);

        conn.insert("sp_order_master_insert", p);
    }
    public static void update(order_master_model order)
    {
        My_Connection conn = new My_Connection();

        SqlParameter[] p = new SqlParameter[5];
        p[0] = new SqlParameter("@order_master_id", order.order_master_id);
        p[1] = new SqlParameter("@session_id", order.session_id);
        p[2] = new SqlParameter("@order_no", order.order_no);
        p[3] = new SqlParameter("@order_date", order.order_master_id);
        p[4] = new SqlParameter("@order_status", order.order_status);


        conn.update("sp_order_category_update", p);
    }
    public static List <order_master_model> select_all()
    {
        List <order_master_model> li   = new List <order_master_model>();
        My_Connection             conn = new My_Connection();
        DataSet ds = conn.select_all("sp_order_master_select_all");

        for (int i = 0; i <= ds.Tables[0].Rows.Count - 1; i++)
        {
            DataRow            dr    = ds.Tables[0].Rows[i];
            order_master_model order = new order_master_model();
            order.order_master_id = int.Parse(dr["order_master_id"].ToString());
            order.session_id      = int.Parse(dr["session_id"].ToString());
            order.order_no        = dr["order_no"].ToString();
            order.order_date      = DateTime.Parse(dr["order_date"].ToString());
            order.order_status    = int.Parse(dr["order_status"].ToString());
            li.Add(order);
        }
        return(li);
    }