www.pudn.com > MyShop.rar > City.cs

using System; 
using System.Collections.Generic; 
using System.Data; 
 
 
using MyShop.DALFactory; 
using MyShop.IDAL; 
using MyShop.Model; 
 
namespace MyShop.BLL 
{ 
    public class City 
    { 
        private ICity dal = DataAccess.CreateCity(); 
        public City() { } 
        #region ICategory member 
 
        protected int Add(CityInfo model) 
        { 
            if (model == null) 
                return 0; 
            return dal.Add(model); 
        } 
        public int Delete(string filter) 
        { 
            if (string.IsNullOrEmpty(filter)) 
                return 0; 
            return dal.Delete(filter); 
        } 
 
        public bool Exist(string filter) 
        { 
            filter = filter.Trim(); 
            if (string.IsNullOrEmpty(filter)) 
                return false; 
            return dal.Exist(filter); 
        } 
 
        public DataSet GetDataSet() 
        { 
            return dal.GetDataSet(); 
        } 
        public DataSet GetDataSet(string filter) 
        { 
            filter = filter.Trim(); 
            if (string.IsNullOrEmpty(filter)) 
                return null; 
            return dal.GetDataSet(filter); 
        } 
        public DataSet GetDataSet(int AreaId) 
        { 
            if (AreaId <= 0) 
                return null; 
            string filter = " AreaId=" + AreaId; 
            return GetDataSet(filter); 
        } 
        public CityInfo GetModel(DataRow dr) 
        { 
            if (dr == null) 
                return null; 
            return dal.GetModel(dr); 
        } 
 
        private DataSet Query(string sql) 
        { 
            sql = sql.Trim(); 
            if (string.IsNullOrEmpty(sql)) 
                return null; 
            return dal.Query(sql); 
        } 
 
        protected int Update(CityInfo model, string filter) 
        { 
            if (model == null) 
                return 0; 
            filter = filter.Trim(); 
            if (string.IsNullOrEmpty(filter)) 
                return 0; 
            return dal.Update(model, filter); 
        } 
        //------------------------- 
        #endregion 
 
        #region common 
 
        public int Add(CityInfo model, out string msg) 
        { 
            msg = ""; 
            if (model == null) 
            { 
                msg = msg + "
数据不能为空
"; 
                return 0; 
            } 
 
            bool isErr = false; 
 
            if (isErr) 
                return 0; 
 
            int count = 0; 
            count = Add(model); 
            if (count == 0) 
                msg = "
系统发生错误,请重新添加!
"; 
            if (count == 1) 
                msg = "
添加成功!
"; 
            return count; 
        } 
 
        public int Delete(int AreaId) 
        { 
            if (string.IsNullOrEmpty(AreaId.ToString())) 
                return 0; 
            string filer; 
            filer = " AreaId =" + AreaId; 
            return Delete(filer); 
        } 
        public int Update(CityInfo model) 
        { 
 
            if (model == null) 
            { 
                return 0; 
            } 
            string filter; 
            filter = " AreaId=" + model.AreaId; 
            return Update(model, filter); 
        } 
 
        public CityInfo GetModel(int AreaId) 
        { 
            DataSet dataset = new DataSet(); 
            dataset = GetDataSet(" AreaId=" + AreaId); 
            if (dataset != null && dataset.Tables[0].Rows.Count > 0) 
                return GetModel(dataset.Tables[0].Rows[0]); 
            return null; 
 
        }      
 
        #endregion 
 
        public DataSet GetProvinceList() 
        { 
 
            return dal.GetProvinceList(); 
        } 
    } 
}