bookDAL/cartDAL.cs

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using System;
using System.Data;
using System.Text;
using System.Data.SqlClient;

namespace myBook.DAL
{
	/// <summary>
	/// 数据访问类:tb_cart
	/// </summary>
	public partial class cartDAL
	{
		public cartDAL()
		{}
		#region  Method

        /// <summary>
        /// 
        /// </summary>
        /// <param name="userid"></param>
        /// <returns></returns>
        public bool UpdatePay(int userid)
        {
            string sql = "update tb_cart set ispay=1 where userid=" + userid;
            int rows = SQLHelper.ExecuteSql(sql);
            if (rows > 0)
            {
                return true;
            }
            else
            {
                return false;
            }

        }

		/// <summary>
		/// 增加一条数据
		/// </summary>
		public int Add(myBook.Model.cartModel model)
		{
			StringBuilder strSql=new StringBuilder();
			strSql.Append("insert into tb_cart(");
            strSql.Append("bookName,userId,number,price,sumPrice,status,ispay,bookid)");
            strSql.Append(" values (");
            strSql.Append("@bookName,@userId,@number,@price,@sumPrice,@status,@ispay,@bookid)");
            strSql.Append(";select @@IDENTITY");
            SqlParameter[] parameters = {
					new SqlParameter("@bookName", SqlDbType.NVarChar,50),
					new SqlParameter("@userId", SqlDbType.Int,4),
					new SqlParameter("@number", SqlDbType.Int,4),
					new SqlParameter("@price", SqlDbType.Float,8),
					new SqlParameter("@sumPrice", SqlDbType.Float,8),
					new SqlParameter("@status", SqlDbType.Int,4),
					new SqlParameter("@ispay", SqlDbType.Int,4),
					new SqlParameter("@bookid", SqlDbType.Int,4)};
            parameters[0].Value = model.bookName;
            parameters[1].Value = model.userId;
            parameters[2].Value = model.number;
            parameters[3].Value = model.price;