DAL/Pictures.cs

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using System;
using System.Collections.Generic;
using System.Data;
using System.Text;
using System.Data.SqlClient;
using DBUtility;
namespace DAL
{
    /// <summary>
    /// 数据访问类:图文
    /// </summary>
    public partial class Pictures
    {
        public Pictures()
        { }
        #region  Method

        /// <summary>
        /// 得到最大ID
        /// </summary>
        public int GetMaxId()
        {
            return DbHelperSQL.GetMaxID("Id", "dt_Pictures");
        }

        /// <summary>
        /// 是否存在该记录
        /// </summary>
        public bool Exists(int Id)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("select count(1) from dt_Pictures");
            strSql.Append(" where Id=@Id ");
            SqlParameter[] parameters = {
					new SqlParameter("@Id", SqlDbType.Int,4)};
            parameters[0].Value = Id;

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

        /// <summary>
        /// 返回数据总数(分页用到)
        /// </summary>
        public int GetCount(string strWhere)
        {
            StringBuilder strSql = new StringBuilder();
            strSql.Append("select count(*) as H ");

            strSql.Append(" from dt_Pictures left join (select proid as ProId,ISNULL(MIN(t.price),0) as currPrice ,ISNULL(MIN(t.OriginalPrice),0) as originalprice, min(t.OriginalpriceTitle) as originaltitle from productprice t group by t.ProId) as t2 on  dt_Pictures.Id = t2.ProId ");
            if (strWhere.Trim() != "")
            {
                strSql.Append(" where " + strWhere);
            }
            return Convert.ToInt32(DbHelperSQL.GetSingle(strSql.ToString()));
        }

        /// <summary>
        /// 返回该类别下的所有记录总数(分页用到)
        /// </summary>
        public int GetCount(string strWhere, int classId, int kindId)