public static void insert_product_review(product_review_model product_review)
    {
        My_Connection con = new My_Connection();

        SqlParameter[] p = new SqlParameter[4];

        p[0] = new SqlParameter("@product_id", product_review.product_id);
        p[1] = new SqlParameter("@product_review_description", product_review.product_review_description);
        p[2] = new SqlParameter("@product_review_date_time", product_review.product_review_date_time);
        p[3] = new SqlParameter("@reviwer_name", product_review.reviwer_name);

        con.insert("sp_product_review_insert", p);
    }
    public static List <product_review_model> selectAll()
    {
        List <product_review_model> li = new List <product_review_model>();

        My_Connection con = new My_Connection();

        DataSet ds = con.select_all("sp_product_review_select_all");

        for (int i = 0; i <= ds.Tables[0].Rows.Count - 1; i++)
        {
            DataRow dr = ds.Tables[0].Rows[i];

            product_review_model product_review = new product_review_model();

            product_review.product_id = int.Parse(dr["product_id"].ToString());
            product_review.product_review_description = dr["product_review_description"].ToString();
            product_review.product_review_date_time   = DateTime.Parse(dr["product_review_date_time"].ToString());
            product_review.reviwer_name = dr["reviwer_name"].ToString();
            li.Add(product_review);
        }

        return(li);
    }