.NET数据库编程求索之路4.使用ADO.NET实现（三层架构篇使用Table传递数据）（4）

 

4.使用ADO.NET实现（三层架构篇-使用Table传递数据）（4）

作者：夏春涛 xchunta@163.com

转载请注明来源：http://www.cnblogs.com/SummerRain/archive/2012/07/25/2609154.html

4.5 业务逻辑层HomeShop.BLL

OrderBiz.cs

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 //新添命名空间
 6 using System.Data;
 7 using System.Data.SqlClient;
 8 using HomeShop.Model;
 9 using HomeShop.DAL;
10 
11 namespace HomeShop.BLL
12 {
13     public class OrderBiz
14     {
15         private OrderDAO dao;
16 
17         public OrderBiz()
18         {
19             dao = new OrderDAO();
20         }
21 
22         public OrderBiz(string connectionString)
23         {
24             dao = new OrderDAO(connectionString);
25         }
26 
27         public int Add(Order order)
28         {
29             return dao.Add(order);
30         }
31 
32         public int Update(Order order)
33         {
34             return dao.Update(order);
35         }
36 
37         public int Delete(int orderID)
38         {
39             return dao.Delete(orderID);
40         }
41 
42         public DataTable GetTable()
43         {
44             return dao.GetTable();
45         }
46 
47         public DataTable GetTable(string customerName)
48         {
49             string predicate = " [CustomerName] LIKE @CustomerName "; ;
50             SqlParameter param = new SqlParameter("@CustomerName", "%" + customerName + "%");
51             return dao.GetTable(predicate, param);
52         }
53 
54         public Order GetSingle(int orderID)
55         {
56             return dao.GetSingle(orderID);
57         }
58 
59     }
60 }

 

OrderStateBiz.cs

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 //新添命名空间
 6 using System.Data;
 7 using System.Data.SqlClient;
 8 using HomeShop.DAL;
 9 
10 namespace HomeShop.BLL
11 {
12     public class OrderStateBiz
13     {
14         private OrderStateDAO dao;
15 
16         public OrderStateBiz()
17         {
18             dao = new OrderStateDAO();
19         }
20 
21         public OrderStateBiz(string connectionString)
22         {
23             dao = new OrderStateDAO(connectionString);
24         }
25 
26         public DataTable GetTable()
27         {
28             return dao.GetTable();
29         }
30     }
31 }

数据库文件：/Files/SummerRain/NetDbDevRoad/HomeShopDB.rar

完整源代码：/Files/SummerRain/NetDbDevRoad/4使用ADONET实现三层架构Table.rar