DAL/UserRedPackageService.cs

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

namespace DAL
{
	/// <summary>
	/// 数据访问类:UserRedPackageService
	/// </summary>
	public partial class UserRedPackageService
	{
		public UserRedPackageService()
		{}
		#region  BasicMethod
        /// <summary>
        /// 得到一个对象实体
        /// </summary>
        public static Model.UserRedPackage GetModelByPackageId(int packageId)
        {

            StringBuilder strSql = new StringBuilder();
            strSql.Append("select  top 1 * from UserRedPackage ");
            strSql.Append(" where packageId=@packageId order by id desc");
            SqlParameter[] parameters = {
					new SqlParameter("@packageId", SqlDbType.Int,4)
			};
            parameters[0].Value = packageId;

            Model.UserRedPackage model = new Model.UserRedPackage();
            DataSet ds = DBHelperSQL.Query(strSql.ToString(), parameters);
            if (ds.Tables[0].Rows.Count > 0)
            {
                return DataRowToModel(ds.Tables[0].Rows[0]);
            }
            else
            {
                return null;
            }
        }

        /// <summary>
        /// 更新状态
        /// </summary>
        /// <param name="id"></param>
        /// <param name="status"></param>
        /// <returns></returns>
        public static int UpdateStatus(int id, int status)
        {
            string sql = "update UserRedPackage set status = " + status + " where id = " + id;
            return DBHelperSQL.ExecuteSql(sql);
        }
        /// <summary>
        /// 用户删除优惠券
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        public static int DeleteByUser(int id)
        {
            string sql = "update UserRedPackage set status = 5 where packageId = " + id;