OA2021/DAL/CarInfoService.cs

using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Text;
using Models;


namespace DAL
{
    public class CarInfoService
    {
        List<CarInfo> excuteSql(string sql, params SqlParameter[] param)
        {
            return ServiceBase<CarInfo>.excuteSql(new CarInfo(), "CarInfo", sql, CommandType.Text, param);
        }
        CarInfo excuteType(string sql, params SqlParameter[] param)
        {
            //查询结果放入对象集合
            List<CarInfo> hdList = excuteSql(sql, param);
            //判断集合是否为空
            if (hdList == null || hdList.Count == 0)
                //返回null
                return null;
            //返回单个对象
            return hdList[0];
        }


        /// <summary>
        /// 根据ID查询
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        public CarInfo GetById(string id)
        {
            //调用获取单个对象的方法
            string sql = "select * from  CarInfo  where Id=@Id";
            SqlParameter[] parameter = new SqlParameter[]{
                                 new SqlParameter("@Id", id)
            };
            return excuteType(sql, parameter);

        }

        /// <summary>
        /// 获取全部 - 分页
        /// </summary>
        /// <returns></returns>
        public List<CarInfo> GetALL(int pageIndex, out int sumPage, out int totalRecord, string City)
        {
            string sqlwhere = "IsDel = 0";

            if (!string.IsNullOrEmpty(City))
                sqlwhere += " and City like '%" + City + "%'";

            return PageBase<CarInfo>.excutePageSql(new CarInfo(), "CarInfo", "CarInfo", "*", "City asc", sqlwhere, 10, pageIndex, out sumPage, out totalRecord);
        }
        /// <summary>
        /// 获取全部 - 分页
        /// </summary>
        /// <returns></returns>
        public List<CarInfo> GetALL(int pageIndex, out int sumPage, out int totalRecord, string City,string Countrys)
        {
            string sqlwhere = "IsDel = 0";

            if (!string.IsNullOrEmpty(Countrys))
            {
                if (Countrys.Contains("中国"))
                {
                    if (Countrys == "中国")
                    {
                        sqlwhere += " and Country like '%" + City + "%'";
                    }
                    else
                    {
                        sqlwhere += " and City like '%" + City + "%'";
                    }
                }
                else
                {
                    string country1 = "";
                    string[] country = new string[] { };

                    if (Countrys.Contains(","))
                        country = Countrys.Split(',');
                    else if (Countrys.Contains("、"))
                        country = Countrys.Split('、');
                    else if (Countrys.Contains("，"))
                        country = Countrys.Split('，');
                    else if (Countrys.Contains(" "))
                        country = Countrys.Split(' ');

                    if (country.Length >= 1)
                    {
                        for (int i = 0; i < country.Length; i++)
                        {
                            if (i == country.Length - 1)
                                country1 += " '" + country[i] + "'";
                            else
                                country1 += " '" + country[i] + "',";
                        }
                        sqlwhere += " and Country in (" + country1 + ")";
                    }
                    else
                        sqlwhere += " and Country like '%" + Countrys + "%'";
                }
            }
            else
            {
                sqlwhere += " and City like '%" + City + "%'";
            }

            return PageBase<CarInfo>.excutePageSql(new CarInfo(), "CarInfo", "CarInfo", "*", "City asc", sqlwhere, 10, pageIndex, out sumPage, out totalRecord);
        }
    }
}