SuLei.DAL/sl_article_goods.cs

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using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Reflection;
using System.Text;
using SuLei.DBUtility;
using SuLei.Common;

namespace SuLei.DAL
{
    /// <summary>
    /// 数据访问类:商品价格
    /// </summary>
    public partial class sl_article_goods
    {
        private string databaseprefix;//数据库表名前缀
        public sl_article_goods(string _databaseprefix)
        {
            databaseprefix = _databaseprefix;
        }

        #region 基本方法================================
        /// <summary>
        /// 是否存在该记录
        /// </summary>
        public bool Exists(int channel_id, int article_id, int id)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("select count(1) from  " + databaseprefix + "article_goods");
            strSql.Append(" where channel_id=@channel_id and article_id=@article_id and id=@id");
            SqlParameter[] parameters = {
                    new SqlParameter("@channel_id", SqlDbType.Int,4),
                    new SqlParameter("@article_id", SqlDbType.Int,4),
					new SqlParameter("@id", SqlDbType.Int,4)};
            parameters[0].Value = channel_id;
            parameters[1].Value = article_id;
            parameters[2].Value = id;

            return DbHelperSQL.Exists(strSql.ToString(), parameters);
        }

        /// <summary>
        /// 增加一条数据
        /// </summary>
        public void Add(SqlConnection conn, SqlTransaction trans, Model.sl_article_goods model, int channel_id, int article_id)
        {
            #region 主表信息==========================
            StringBuilder strSql = new StringBuilder();
            StringBuilder str1 = new StringBuilder();//数据字段
            StringBuilder str2 = new StringBuilder();//数据参数
            //利用反射获得属性的所有公共属性
            PropertyInfo[] pros = model.GetType().GetProperties();
            List<SqlParameter> paras = new List<SqlParameter>();
            strSql.Append("insert into " + databaseprefix + "article_goods(");
            foreach (PropertyInfo pi in pros)
            {
                //如果不是主键则追加sql字符串
                if (!pi.Name.Equals("id") && !pi.Name.Equals("group_prices"))
                {