DAL/Wx_GoodsService - 副本.cs

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

namespace DAL
{
   /// <summary>
	/// 数据访问类:Wx_Goods
	/// </summary>
	public partial class Wx_GoodsService
	{
		public Wx_GoodsService()
		{}
		#region  BasicMethod
		/// <summary>
		/// 是否存在该记录
		/// </summary>
		public bool Exists(int id)
		{
			StringBuilder strSql=new StringBuilder();
			strSql.Append("select count(1) from Wx_Goods");
			strSql.Append(" where id=@id");
			SqlParameter[] parameters = {
					new SqlParameter("@id", SqlDbType.Int,4)
			};
			parameters[0].Value = id;

			return DBHelperSQL.Exists(strSql.ToString(),parameters);
		}
        /// <summary>
        /// 得到最大ID
        /// </summary>
        public static int GetMaxId()
        {
            return DBHelperSQL.GetMaxID("id", "Wx_Goods");
        }
		/// <summary>
		/// 增加一条数据
		/// </summary>
		public static int Add(Model.Wx_Goods model)
		{
			StringBuilder strSql=new StringBuilder();
            strSql.Append("insert into Wx_Goods(");
            strSql.Append("Goods,Spec,Img,Price,Sort)");
            strSql.Append(" values (");
            strSql.Append("@Goods,@Spec,@Img,@Price,@Sort)");
            strSql.Append(";select @@IDENTITY");
            SqlParameter[] parameters = {
					new SqlParameter("@Goods", SqlDbType.VarChar,50),
					new SqlParameter("@Spec", SqlDbType.VarChar,20),
					new SqlParameter("@Img", SqlDbType.VarChar,200),
					new SqlParameter("@Price", SqlDbType.Money,8),
					new SqlParameter("@Sort", SqlDbType.Int,4)};
            parameters[0].Value = model.Goods;
            parameters[1].Value = model.Spec;
            parameters[2].Value = model.Img;
            parameters[3].Value = model.Price;
            parameters[4].Value = model.Sort;