.NET数据库编程求索之路--6.使用ADO.NET实现（三层架构篇-使用List传递数据-基于存储过程）（1）
Posted on 2012-07-26 23:57 SummerRain 阅读(781) 评论(0) 编辑 收藏 举报6.使用ADO.NET实现（三层架构篇-使用List传递数据-基于存储过程）（1）
【 夏春涛 email: xchuntao@163.com blog: http://www.cnblogs.com/SummerRain 】
6.1 解决方案框架
解决方案(.sln)包含以下几个项目：
（1）类库项目HomeShop.DbUtility，数据访问实用工具；【同5】
（2）类库项目HomeShop.Model，实体层；【同5】
（3）类库项目HomeShop.DAL，数据访问层；
（4）类库项目HomeShop.BLL，业务逻辑层；【同5】
（5）WinForm项目HomeShop.WinForm，界面层。【同5】
6.2 数据访问层HomeShop.DAL
OrderDAO.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.DbUtility;
9 using HomeShop.Model;
10
11 namespace HomeShop.DAL
12 {
13 public class OrderDAO
14 {
15 protected SqlDbHelper dbHelper;
16
17 public OrderDAO()
18 {
19 this.dbHelper = new SqlDbHelper();
20 }
21
22 #region 添加
23 public int Add(Order order)
24 {
25 int rowsCountAffected = 0;
26 SqlTransaction trans = dbHelper.BeginTransaction();
27 try
28 {
29 //新增订单基本信息---------------------------------------------
30 //@OrderID作为传出参数，用于获取新增订单的ID
31 SqlParameter paramOrderID = new SqlParameter("@OrderID", SqlDbType.Int);
32 paramOrderID.Direction = ParameterDirection.Output;
33 SqlParameter[] parameters = {
34 paramOrderID,
35 new SqlParameter("@OrderTime", order.OrderTime),
36 new SqlParameter("@OrderStateCode", order.OrderStateCode),
37 new SqlParameter("@CustomerName", order.CustomerName),
38 new SqlParameter("@CustomerPhoneNo", order.CustomerPhoneNo),
39 new SqlParameter("@CustomerAddress", order.CustomerAddress)};
40 rowsCountAffected += dbHelper.ExecuteNonQueryTrans(trans, "Order_Insert", CommandType.StoredProcedure, parameters);
41 order.OrderID = (int)paramOrderID.Value;
42 //-----------------------------------------------------------
43 //循环添加订购商品信息
44 for (int i = 0; i < order.OrderItemList.Count; i++)
45 {
46 SqlParameter paramOrderItemID = new SqlParameter("@OrderItemID", SqlDbType.Int);
47 paramOrderItemID.Direction = ParameterDirection.Output;
48 SqlParameter[] parametersX = {
49 paramOrderItemID,
50 new SqlParameter("@OrderID", order.OrderID),
51 new SqlParameter("@Product", order.OrderItemList[i].Product),
52 new SqlParameter("@UnitPrice", order.OrderItemList[i].UnitPrice),
53 new SqlParameter("@Quantity", order.OrderItemList[i].Quantity)};
54 rowsCountAffected += dbHelper.ExecuteNonQueryTrans(trans, "OrderItem_Insert", CommandType.StoredProcedure, parametersX);
55 }
56 trans.Commit();//提交数据库事务
57 dbHelper.Close();
58 }
59 catch
60 {
61 trans.Rollback();//回滚数据库事务
62 dbHelper.Close();
63 throw;
64 }
65
66 return rowsCountAffected;
67 }
68 #endregion
69
70 #region 修改
71 public int Update(Order order)
72 {
73 int rowsCountAffected = 0;
74
75 List<SqlCmdTextAndParams> listCmdTextAndParams = new List<SqlCmdTextAndParams>();
76 //修改订单基本信息
77 SqlParameter[] parameters = {
78 new SqlParameter("@OrderTime", order.OrderTime),
79 new SqlParameter("@OrderStateCode", order.OrderStateCode),
80 new SqlParameter("@CustomerName", order.CustomerName),
81 new SqlParameter("@CustomerPhoneNo", order.CustomerPhoneNo),
82 new SqlParameter("@CustomerAddress", order.CustomerAddress),
83 new SqlParameter("@OrderID", order.OrderID)};
84 listCmdTextAndParams.Add(new SqlCmdTextAndParams("Order_Update", CommandType.StoredProcedure, parameters));
85 //-----------------------------------------------------------
86 //循环将订购商品信息列表同步更新到数据库中
87 //删除
88 Order originalOrder = this.GetSingle(order.OrderID);
89 for (int i = 0; i < originalOrder.OrderItemList.Count; i++)
90 {
91 bool exists = order.OrderItemList.Exists(
92 delegate(OrderItem item) { return (item.OrderItemID == originalOrder.OrderItemList[i].OrderItemID); });
93 if (exists) continue;
94
95 SqlParameter[] parametersX = {
96 new SqlParameter("@OrderItemID", originalOrder.OrderItemList[i].OrderItemID)};
97 listCmdTextAndParams.Add(new SqlCmdTextAndParams("OrderItem_Delete", CommandType.StoredProcedure, parametersX));
98 }
99 //新增/修改
100 OrderItemDAO orderItemDAO = new OrderItemDAO();
101 for (int i = 0; i < order.OrderItemList.Count; i++)
102 {
103 if (0 >= order.OrderItemList[i].OrderItemID)//新增
104 {
105 SqlParameter paramOrderItemID = new SqlParameter("@OrderItemID", SqlDbType.Int);
106 paramOrderItemID.Direction = ParameterDirection.Output;
107 SqlParameter[] parametersX = {
108 paramOrderItemID,
109 new SqlParameter("@OrderID", order.OrderID),
110 new SqlParameter("@Product", order.OrderItemList[i].Product),
111 new SqlParameter("@UnitPrice", order.OrderItemList[i].UnitPrice),
112 new SqlParameter("@Quantity", order.OrderItemList[i].Quantity)};
113 listCmdTextAndParams.Add(new SqlCmdTextAndParams("OrderItem_Insert", CommandType.StoredProcedure, parametersX));
114 }
115 else//修改
116 {
117 SqlParameter[] parametersX = {
118 new SqlParameter("@OrderItemID", order.OrderItemList[i].OrderItemID),
119 new SqlParameter("@OrderID", order.OrderID),
120 new SqlParameter("@Product", order.OrderItemList[i].Product),
121 new SqlParameter("@UnitPrice", order.OrderItemList[i].UnitPrice),
122 new SqlParameter("@Quantity", order.OrderItemList[i].Quantity)};
123 listCmdTextAndParams.Add(new SqlCmdTextAndParams("OrderItem_Update", CommandType.StoredProcedure, parametersX));
124 }
125 }
126 rowsCountAffected = dbHelper.ExecuteNonQueryTrans(listCmdTextAndParams);
127 return rowsCountAffected;
128 }
129 #endregion
130
131 //删除
132 public void Delete(int orderID)
133 {
134 SqlParameter parameter = new SqlParameter("@OrderID",orderID);
135 dbHelper.ExecuteNonQuery("Order_Delete", CommandType.StoredProcedure, parameter);
136 }
137
138 //获取实体对象列表
139 public List<Order> GetList()
140 {
141 string predicate = "";
142 DataTable table = GetTable(predicate);
143 return TableToList(table);
144 }
145
146 //获取实体对象列表
147 public List<Order> GetList(string customerName)
148 {
149 string predicate = " [CustomerName] LIKE '%" + customerName + "%'";
150 DataTable table = GetTable(predicate);
151 return TableToList(table);
152 }
153
154 //获取单一实体对象
155 public Order GetSingle(int orderID)
156 {
157 string predicate = " [OrderID] = " + orderID.ToString();
158 DataTable table = GetTable(predicate);
159 List<Order> list = TableToList(table);
160 if (list.Count == 1)
161 {
162 //return list[0];
163 Order order = list[0];
164 //----子表----
165 OrderItemDAO orderItemDAO = new OrderItemDAO();
166 order.OrderItemList = orderItemDAO.GetList(order.OrderID);
167 return order;
168 }
169 else if (list.Count == 0)
170 return null;
171 else
172 {
173 Exception ex = new Exception("满足条件的实体多于1个。");
174 throw ex;
175 }
176 }
177
178 //将DataTable转换为List
179 private List<Order> TableToList(DataTable table)
180 {
181 List<Order> list = new List<Order>();
182 for (int i = 0; i < table.Rows.Count; i++)
183 {
184 list.Add(RowToModel(table.Rows[i]));
185 }
186 return list;
187 }
188
189 //获取DataTable
190 private DataTable GetTable(string predicate)
191 {
192 SqlParameter parameter = new SqlParameter("@predicate", predicate);
193 return dbHelper.ExecuteQuery("Order_Select", CommandType.StoredProcedure, parameter);
194 }
195
196 //将DataRow转换为实体对象
197 private Order RowToModel(DataRow row)
198 {
199 //----父表----
200 Order order = new Order();
201 order.OrderID = (int)row["OrderID"];
202 order.CustomerName = row["CustomerName"].ToString();
203 order.CustomerPhoneNo = row["CustomerPhoneNo"].ToString();
204 order.CustomerAddress = row["CustomerAddress"].ToString();
205 order.OrderTime = Convert.ToDateTime(row["OrderTime"]);
206 order.OrderStateCode = row["OrderStateCode"].ToString();
207 order.OrderStateName = row["OrderStateName"].ToString();
208 //----子表----
209 //OrderItemDAO orderItemDAO = new OrderItemDAO();
210 //order.OrderItemList = orderItemDAO.GetList(order.OrderID);
211
212 return order;
213 }
214
215 }
216 }
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.DbUtility;
9 using HomeShop.Model;
10
11 namespace HomeShop.DAL
12 {
13 public class OrderDAO
14 {
15 protected SqlDbHelper dbHelper;
16
17 public OrderDAO()
18 {
19 this.dbHelper = new SqlDbHelper();
20 }
21
22 #region 添加
23 public int Add(Order order)
24 {
25 int rowsCountAffected = 0;
26 SqlTransaction trans = dbHelper.BeginTransaction();
27 try
28 {
29 //新增订单基本信息---------------------------------------------
30 //@OrderID作为传出参数，用于获取新增订单的ID
31 SqlParameter paramOrderID = new SqlParameter("@OrderID", SqlDbType.Int);
32 paramOrderID.Direction = ParameterDirection.Output;
33 SqlParameter[] parameters = {
34 paramOrderID,
35 new SqlParameter("@OrderTime", order.OrderTime),
36 new SqlParameter("@OrderStateCode", order.OrderStateCode),
37 new SqlParameter("@CustomerName", order.CustomerName),
38 new SqlParameter("@CustomerPhoneNo", order.CustomerPhoneNo),
39 new SqlParameter("@CustomerAddress", order.CustomerAddress)};
40 rowsCountAffected += dbHelper.ExecuteNonQueryTrans(trans, "Order_Insert", CommandType.StoredProcedure, parameters);
41 order.OrderID = (int)paramOrderID.Value;
42 //-----------------------------------------------------------
43 //循环添加订购商品信息
44 for (int i = 0; i < order.OrderItemList.Count; i++)
45 {
46 SqlParameter paramOrderItemID = new SqlParameter("@OrderItemID", SqlDbType.Int);
47 paramOrderItemID.Direction = ParameterDirection.Output;
48 SqlParameter[] parametersX = {
49 paramOrderItemID,
50 new SqlParameter("@OrderID", order.OrderID),
51 new SqlParameter("@Product", order.OrderItemList[i].Product),
52 new SqlParameter("@UnitPrice", order.OrderItemList[i].UnitPrice),
53 new SqlParameter("@Quantity", order.OrderItemList[i].Quantity)};
54 rowsCountAffected += dbHelper.ExecuteNonQueryTrans(trans, "OrderItem_Insert", CommandType.StoredProcedure, parametersX);
55 }
56 trans.Commit();//提交数据库事务
57 dbHelper.Close();
58 }
59 catch
60 {
61 trans.Rollback();//回滚数据库事务
62 dbHelper.Close();
63 throw;
64 }
65
66 return rowsCountAffected;
67 }
68 #endregion
69
70 #region 修改
71 public int Update(Order order)
72 {
73 int rowsCountAffected = 0;
74
75 List<SqlCmdTextAndParams> listCmdTextAndParams = new List<SqlCmdTextAndParams>();
76 //修改订单基本信息
77 SqlParameter[] parameters = {
78 new SqlParameter("@OrderTime", order.OrderTime),
79 new SqlParameter("@OrderStateCode", order.OrderStateCode),
80 new SqlParameter("@CustomerName", order.CustomerName),
81 new SqlParameter("@CustomerPhoneNo", order.CustomerPhoneNo),
82 new SqlParameter("@CustomerAddress", order.CustomerAddress),
83 new SqlParameter("@OrderID", order.OrderID)};
84 listCmdTextAndParams.Add(new SqlCmdTextAndParams("Order_Update", CommandType.StoredProcedure, parameters));
85 //-----------------------------------------------------------
86 //循环将订购商品信息列表同步更新到数据库中
87 //删除
88 Order originalOrder = this.GetSingle(order.OrderID);
89 for (int i = 0; i < originalOrder.OrderItemList.Count; i++)
90 {
91 bool exists = order.OrderItemList.Exists(
92 delegate(OrderItem item) { return (item.OrderItemID == originalOrder.OrderItemList[i].OrderItemID); });
93 if (exists) continue;
94
95 SqlParameter[] parametersX = {
96 new SqlParameter("@OrderItemID", originalOrder.OrderItemList[i].OrderItemID)};
97 listCmdTextAndParams.Add(new SqlCmdTextAndParams("OrderItem_Delete", CommandType.StoredProcedure, parametersX));
98 }
99 //新增/修改
100 OrderItemDAO orderItemDAO = new OrderItemDAO();
101 for (int i = 0; i < order.OrderItemList.Count; i++)
102 {
103 if (0 >= order.OrderItemList[i].OrderItemID)//新增
104 {
105 SqlParameter paramOrderItemID = new SqlParameter("@OrderItemID", SqlDbType.Int);
106 paramOrderItemID.Direction = ParameterDirection.Output;
107 SqlParameter[] parametersX = {
108 paramOrderItemID,
109 new SqlParameter("@OrderID", order.OrderID),
110 new SqlParameter("@Product", order.OrderItemList[i].Product),
111 new SqlParameter("@UnitPrice", order.OrderItemList[i].UnitPrice),
112 new SqlParameter("@Quantity", order.OrderItemList[i].Quantity)};
113 listCmdTextAndParams.Add(new SqlCmdTextAndParams("OrderItem_Insert", CommandType.StoredProcedure, parametersX));
114 }
115 else//修改
116 {
117 SqlParameter[] parametersX = {
118 new SqlParameter("@OrderItemID", order.OrderItemList[i].OrderItemID),
119 new SqlParameter("@OrderID", order.OrderID),
120 new SqlParameter("@Product", order.OrderItemList[i].Product),
121 new SqlParameter("@UnitPrice", order.OrderItemList[i].UnitPrice),
122 new SqlParameter("@Quantity", order.OrderItemList[i].Quantity)};
123 listCmdTextAndParams.Add(new SqlCmdTextAndParams("OrderItem_Update", CommandType.StoredProcedure, parametersX));
124 }
125 }
126 rowsCountAffected = dbHelper.ExecuteNonQueryTrans(listCmdTextAndParams);
127 return rowsCountAffected;
128 }
129 #endregion
130
131 //删除
132 public void Delete(int orderID)
133 {
134 SqlParameter parameter = new SqlParameter("@OrderID",orderID);
135 dbHelper.ExecuteNonQuery("Order_Delete", CommandType.StoredProcedure, parameter);
136 }
137
138 //获取实体对象列表
139 public List<Order> GetList()
140 {
141 string predicate = "";
142 DataTable table = GetTable(predicate);
143 return TableToList(table);
144 }
145
146 //获取实体对象列表
147 public List<Order> GetList(string customerName)
148 {
149 string predicate = " [CustomerName] LIKE '%" + customerName + "%'";
150 DataTable table = GetTable(predicate);
151 return TableToList(table);
152 }
153
154 //获取单一实体对象
155 public Order GetSingle(int orderID)
156 {
157 string predicate = " [OrderID] = " + orderID.ToString();
158 DataTable table = GetTable(predicate);
159 List<Order> list = TableToList(table);
160 if (list.Count == 1)
161 {
162 //return list[0];
163 Order order = list[0];
164 //----子表----
165 OrderItemDAO orderItemDAO = new OrderItemDAO();
166 order.OrderItemList = orderItemDAO.GetList(order.OrderID);
167 return order;
168 }
169 else if (list.Count == 0)
170 return null;
171 else
172 {
173 Exception ex = new Exception("满足条件的实体多于1个。");
174 throw ex;
175 }
176 }
177
178 //将DataTable转换为List
179 private List<Order> TableToList(DataTable table)
180 {
181 List<Order> list = new List<Order>();
182 for (int i = 0; i < table.Rows.Count; i++)
183 {
184 list.Add(RowToModel(table.Rows[i]));
185 }
186 return list;
187 }
188
189 //获取DataTable
190 private DataTable GetTable(string predicate)
191 {
192 SqlParameter parameter = new SqlParameter("@predicate", predicate);
193 return dbHelper.ExecuteQuery("Order_Select", CommandType.StoredProcedure, parameter);
194 }
195
196 //将DataRow转换为实体对象
197 private Order RowToModel(DataRow row)
198 {
199 //----父表----
200 Order order = new Order();
201 order.OrderID = (int)row["OrderID"];
202 order.CustomerName = row["CustomerName"].ToString();
203 order.CustomerPhoneNo = row["CustomerPhoneNo"].ToString();
204 order.CustomerAddress = row["CustomerAddress"].ToString();
205 order.OrderTime = Convert.ToDateTime(row["OrderTime"]);
206 order.OrderStateCode = row["OrderStateCode"].ToString();
207 order.OrderStateName = row["OrderStateName"].ToString();
208 //----子表----
209 //OrderItemDAO orderItemDAO = new OrderItemDAO();
210 //order.OrderItemList = orderItemDAO.GetList(order.OrderID);
211
212 return order;
213 }
214
215 }
216 }
OrderItemDAO.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.DbUtility;
9 using HomeShop.Model;
10
11 namespace HomeShop.DAL
12 {
13 public class OrderItemDAO
14 {
15 private SqlDbHelper dbHelper;
16
17 public OrderItemDAO()
18 {
19 this.dbHelper = new SqlDbHelper();
20 }
21
22 //获取实体对象列表
23 public List<OrderItem> GetList(int orderID)
24 {
25 DataTable table = GetTable(orderID);
26 return TableToList(table);
27 }
28
29 //将DataTable转换为List
30 private List<OrderItem> TableToList(DataTable table)
31 {
32 List<OrderItem> list = new List<OrderItem>();
33 for (int i = 0; i < table.Rows.Count; i++)
34 {
35 list.Add(RowToModel(table.Rows[i]));
36 }
37 return list;
38 }
39
40 //获取DataTable
41 private DataTable GetTable(int orderID)
42 {
43 SqlParameter parameter = new SqlParameter("@OrderID", orderID);
44 return dbHelper.ExecuteQuery("OrderItem_Select", CommandType.StoredProcedure, parameter);
45 }
46
47 //将DataRow转换为实体对象
48 private OrderItem RowToModel(DataRow row)
49 {
50 OrderItem orderItem = new OrderItem();
51 orderItem.OrderID = (int)row["OrderID"];
52 orderItem.OrderItemID = (int)row["OrderItemID"];
53 orderItem.Product = row["Product"].ToString();
54 orderItem.Quantity = (int)row["Quantity"];
55 orderItem.UnitPrice = (decimal)row["UnitPrice"];
56
57 return orderItem;
58 }
59 }
60 }
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.DbUtility;
9 using HomeShop.Model;
10
11 namespace HomeShop.DAL
12 {
13 public class OrderItemDAO
14 {
15 private SqlDbHelper dbHelper;
16
17 public OrderItemDAO()
18 {
19 this.dbHelper = new SqlDbHelper();
20 }
21
22 //获取实体对象列表
23 public List<OrderItem> GetList(int orderID)
24 {
25 DataTable table = GetTable(orderID);
26 return TableToList(table);
27 }
28
29 //将DataTable转换为List
30 private List<OrderItem> TableToList(DataTable table)
31 {
32 List<OrderItem> list = new List<OrderItem>();
33 for (int i = 0; i < table.Rows.Count; i++)
34 {
35 list.Add(RowToModel(table.Rows[i]));
36 }
37 return list;
38 }
39
40 //获取DataTable
41 private DataTable GetTable(int orderID)
42 {
43 SqlParameter parameter = new SqlParameter("@OrderID", orderID);
44 return dbHelper.ExecuteQuery("OrderItem_Select", CommandType.StoredProcedure, parameter);
45 }
46
47 //将DataRow转换为实体对象
48 private OrderItem RowToModel(DataRow row)
49 {
50 OrderItem orderItem = new OrderItem();
51 orderItem.OrderID = (int)row["OrderID"];
52 orderItem.OrderItemID = (int)row["OrderItemID"];
53 orderItem.Product = row["Product"].ToString();
54 orderItem.Quantity = (int)row["Quantity"];
55 orderItem.UnitPrice = (decimal)row["UnitPrice"];
56
57 return orderItem;
58 }
59 }
60 }
OrderStateDAO.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.DbUtility;
9 using HomeShop.Model;
10
11 namespace HomeShop.DAL
12 {
13 public class OrderStateDAO
14 {
15 private SqlDbHelper dbHelper;
16
17 public OrderStateDAO()
18 {
19 this.dbHelper = new SqlDbHelper();
20 }
21
22 //获取实体对象列表
23 public List<OrderState> GetList()
24 {
25 DataTable table = GetTable();
26 return TableToList(table);
27 }
28
29 //将DataTable转换为List
30 private List<OrderState> TableToList(DataTable table)
31 {
32 List<OrderState> list = new List<OrderState>();
33 for (int i = 0; i < table.Rows.Count; i++)
34 {
35 list.Add(RowToModel(table.Rows[i]));
36 }
37 return list;
38 }
39
40 //获取DataTable
41 private DataTable GetTable()
42 {
43 return dbHelper.ExecuteQuery("OrderState_Select", CommandType.StoredProcedure, null);
44 }
45
46 //将DataRow转换为实体对象
47 private OrderState RowToModel(DataRow row)
48 {
49 OrderState orderState = new OrderState();
50 orderState.Code = row["Code"].ToString();
51 orderState.Name = row["Name"].ToString();
52 return orderState;
53 }
54 }
55 }
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.DbUtility;
9 using HomeShop.Model;
10
11 namespace HomeShop.DAL
12 {
13 public class OrderStateDAO
14 {
15 private SqlDbHelper dbHelper;
16
17 public OrderStateDAO()
18 {
19 this.dbHelper = new SqlDbHelper();
20 }
21
22 //获取实体对象列表
23 public List<OrderState> GetList()
24 {
25 DataTable table = GetTable();
26 return TableToList(table);
27 }
28
29 //将DataTable转换为List
30 private List<OrderState> TableToList(DataTable table)
31 {
32 List<OrderState> list = new List<OrderState>();
33 for (int i = 0; i < table.Rows.Count; i++)
34 {
35 list.Add(RowToModel(table.Rows[i]));
36 }
37 return list;
38 }
39
40 //获取DataTable
41 private DataTable GetTable()
42 {
43 return dbHelper.ExecuteQuery("OrderState_Select", CommandType.StoredProcedure, null);
44 }
45
46 //将DataRow转换为实体对象
47 private OrderState RowToModel(DataRow row)
48 {
49 OrderState orderState = new OrderState();
50 orderState.Code = row["Code"].ToString();
51 orderState.Name = row["Name"].ToString();
52 return orderState;
53 }
54 }
55 }
数据库文件：/Files/SummerRain/NetDbDevRoad/HomeShopDB.rar
完整源代码：/Files/SummerRain/NetDbDevRoad/6使用ADONET实现三层架构ListSP.rar
