App_Code/BLL/Cart.cs

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using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using SystemModel;
using SystemDAL;
using System.Data.SqlClient;
using Wuqi.Webdiyer;
/// <summary>
/// GuidGWC 的摘要说明
/// </summary>
/// 
namespace SystemGuidGWC
{
    public class GuidGWC
    {
        public GuidGWC()
        {
            //
            // TODO: 在此处添加构造函数逻辑

        }
        /// <summary>
        /// 购物车 更新 最后订单确认
        /// </summary>
        /// <param name="M"></param>
        /// <returns></returns>
        public static int UpdateOrderData(CartModel M)
        {

            string sqlstr = "UPDATE Cart SET o_order=@o_order WHERE u_id=@u_id and o_order is null";
            try
            {
                SqlParameter[] SqlParameter =
                {
                    new SqlParameter("@o_order",M.CartOrderLast),
                    new SqlParameter("@u_id",M.CartUID)
                   // new SqlParameter("@c_order",M.CartOrder)
                };
                DAL dal = new DAL();
                return dal.ExecuteNonQuery(sqlstr, SqlParameter);
            }
            catch (Exception E)
            {
                throw E;
            }
        }
        /// <summary>
        /// 判断 是否匿名添加到了购物车 读取临时产品的信息 在登陆时注入该信息
        /// </summary>
        /// <param name="M"></param>
        /// <returns></returns>
        public static DataSet GetAllProToCarBYuser(CartModel M)
        {
            string sqlstr = "select * FROM Cart WHERE c_order=@c_order and o_order is null";