.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）（5）
Posted on 2012-07-25 23:14 SummerRain 阅读(332) 评论(0) 编辑 收藏 举报4.使用ADO.NET实现（三层架构篇-使用Table传递数据）（5）
作者：夏春涛 xchunta@163.com
转载请注明来源：http://www.cnblogs.com/SummerRain/archive/2012/07/25/2609166.html
4.6 界面层HomeShop.WinForm
App.config
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<connectionStrings>
<add name="HomeShop" connectionString="Data Source=(local);Initial Catalog=HomeShop;Integrated Security=SSPI;" />
</connectionStrings>
</configuration>
<configuration>
<connectionStrings>
<add name="HomeShop" connectionString="Data Source=(local);Initial Catalog=HomeShop;Integrated Security=SSPI;" />
</connectionStrings>
</configuration>
FormMain.cs
1 using System;
2 using System.Collections.Generic;
3 using System.ComponentModel;
4 using System.Data;
5 using System.Drawing;
6 using System.Linq;
7 using System.Text;
8 using System.Windows.Forms;
9 //新添命名空间
10 using HomeShop.BLL;
11
12 namespace HomeShop.WinForm
13 {
14 //功能：订单管理系统-主界面窗体；
15 //作者：夏春涛；
16 //日期：2011-11-30；
17 public partial class FormMain : Form
18 {
19 //Order业务逻辑对象
20 private OrderBiz orderBiz = new OrderBiz();
21
22 //【窗体构造函数】
23 public FormMain()
24 {
25 InitializeComponent();
26 }
27
28 //【窗体加载事件】
29 private void FormMain_Load(object sender, EventArgs e)
30 {
31 gridView.AutoGenerateColumns = false;//禁止DataGridView控件自动生成列
32 BindData_Orders();//绑定订单列表
33 }
34
35 //绑定订单列表
36 private void BindData_Orders()
37 {
38 txtCustomerName.Clear();
39 DataView dataView = orderBiz.GetTable().DefaultView;
40 gridView.DataSource = dataView;
41 labRecordCount.Text = "共 " + dataView.Table.Rows.Count.ToString() + " 条记录";
42 }
43
44 //【查询】订单
45 private void btnQuery_Click(object sender, EventArgs e)
46 {
47 if ("" == txtCustomerName.Text.Trim())
48 {
49 MessageBox.Show(this, "请输入要查询的顾客姓名关键词！", "提示",
50 MessageBoxButtons.OK, MessageBoxIcon.Information);
51 txtCustomerName.Focus();
52 return;
53 }
54 DataView dataView = orderBiz.GetTable(txtCustomerName.Text.Trim()).DefaultView;
55 gridView.DataSource = dataView;
56 labRecordCount.Text = "共 " + dataView.Table.Rows.Count.ToString() + " 条记录";
57 }
58
59 //【全部显示】订单
60 private void btnShowAll_Click(object sender, EventArgs e)
61 {
62 BindData_Orders();
63 }
64
65 //【新增】订单
66 private void menuAdd_Click(object sender, EventArgs e)
67 {
68 FormEdit formEdit = new FormEdit();
69 DialogResult dlgResult = formEdit.ShowDialog(this);//显示为模式对话框
70 if (DialogResult.OK == dlgResult)
71 {
72 BindData_Orders();//重新绑定订单列表
73 }
74 formEdit.Dispose();//释放窗体资源
75 }
76
77 //【修改】订单
78 private void menuUpdate_Click(object sender, EventArgs e)
79 {
80 if (gridView.RowCount == 0) return;
81
82 int selectedRowIndex = gridView.SelectedRows[0].Index;
83 int selectedOrderID = (int)gridView.SelectedRows[0].Cells["Col_OrderID"].Value;
84 FormEdit formEdit = new FormEdit(selectedOrderID);
85 DialogResult dlgResult = formEdit.ShowDialog(this);//显示为模式对话框
86 if (DialogResult.OK == dlgResult)
87 {
88 BindData_Orders();//重新绑定订单列表
89 gridView.Rows[selectedRowIndex].Selected = true;//依然选中当前行
90 }
91 formEdit.Dispose();//释放窗体资源
92 }
93
94 //【删除】订单
95 private void menuDelete_Click(object sender, EventArgs e)
96 {
97 if (gridView.RowCount == 0) return;
98
99 int selectedRowIndex = gridView.SelectedRows[0].Index;
100 int selectedOrderID = (int)gridView.SelectedRows[0].Cells["Col_OrderID"].Value;
101 DialogResult dlgResult = MessageBox.Show(this, "确认要删除选中的订单吗？", "提示",
102 MessageBoxButtons.YesNo, MessageBoxIcon.Question);
103 if (DialogResult.Yes == dlgResult)
104 {
105 orderBiz.Delete(selectedOrderID);//删除订单
106 BindData_Orders();//重新绑定订单列表
107 //选中下一条记录
108 if (selectedRowIndex > gridView.Rows.Count - 1)
109 selectedRowIndex = gridView.Rows.Count - 1;
110 if (selectedRowIndex >= 0)
111 {
112 gridView.Rows[selectedRowIndex].Selected = true;
113 }
114 }
115 }
116
117
118 }
119 }
2 using System.Collections.Generic;
3 using System.ComponentModel;
4 using System.Data;
5 using System.Drawing;
6 using System.Linq;
7 using System.Text;
8 using System.Windows.Forms;
9 //新添命名空间
10 using HomeShop.BLL;
11
12 namespace HomeShop.WinForm
13 {
14 //功能：订单管理系统-主界面窗体；
15 //作者：夏春涛；
16 //日期：2011-11-30；
17 public partial class FormMain : Form
18 {
19 //Order业务逻辑对象
20 private OrderBiz orderBiz = new OrderBiz();
21
22 //【窗体构造函数】
23 public FormMain()
24 {
25 InitializeComponent();
26 }
27
28 //【窗体加载事件】
29 private void FormMain_Load(object sender, EventArgs e)
30 {
31 gridView.AutoGenerateColumns = false;//禁止DataGridView控件自动生成列
32 BindData_Orders();//绑定订单列表
33 }
34
35 //绑定订单列表
36 private void BindData_Orders()
37 {
38 txtCustomerName.Clear();
39 DataView dataView = orderBiz.GetTable().DefaultView;
40 gridView.DataSource = dataView;
41 labRecordCount.Text = "共 " + dataView.Table.Rows.Count.ToString() + " 条记录";
42 }
43
44 //【查询】订单
45 private void btnQuery_Click(object sender, EventArgs e)
46 {
47 if ("" == txtCustomerName.Text.Trim())
48 {
49 MessageBox.Show(this, "请输入要查询的顾客姓名关键词！", "提示",
50 MessageBoxButtons.OK, MessageBoxIcon.Information);
51 txtCustomerName.Focus();
52 return;
53 }
54 DataView dataView = orderBiz.GetTable(txtCustomerName.Text.Trim()).DefaultView;
55 gridView.DataSource = dataView;
56 labRecordCount.Text = "共 " + dataView.Table.Rows.Count.ToString() + " 条记录";
57 }
58
59 //【全部显示】订单
60 private void btnShowAll_Click(object sender, EventArgs e)
61 {
62 BindData_Orders();
63 }
64
65 //【新增】订单
66 private void menuAdd_Click(object sender, EventArgs e)
67 {
68 FormEdit formEdit = new FormEdit();
69 DialogResult dlgResult = formEdit.ShowDialog(this);//显示为模式对话框
70 if (DialogResult.OK == dlgResult)
71 {
72 BindData_Orders();//重新绑定订单列表
73 }
74 formEdit.Dispose();//释放窗体资源
75 }
76
77 //【修改】订单
78 private void menuUpdate_Click(object sender, EventArgs e)
79 {
80 if (gridView.RowCount == 0) return;
81
82 int selectedRowIndex = gridView.SelectedRows[0].Index;
83 int selectedOrderID = (int)gridView.SelectedRows[0].Cells["Col_OrderID"].Value;
84 FormEdit formEdit = new FormEdit(selectedOrderID);
85 DialogResult dlgResult = formEdit.ShowDialog(this);//显示为模式对话框
86 if (DialogResult.OK == dlgResult)
87 {
88 BindData_Orders();//重新绑定订单列表
89 gridView.Rows[selectedRowIndex].Selected = true;//依然选中当前行
90 }
91 formEdit.Dispose();//释放窗体资源
92 }
93
94 //【删除】订单
95 private void menuDelete_Click(object sender, EventArgs e)
96 {
97 if (gridView.RowCount == 0) return;
98
99 int selectedRowIndex = gridView.SelectedRows[0].Index;
100 int selectedOrderID = (int)gridView.SelectedRows[0].Cells["Col_OrderID"].Value;
101 DialogResult dlgResult = MessageBox.Show(this, "确认要删除选中的订单吗？", "提示",
102 MessageBoxButtons.YesNo, MessageBoxIcon.Question);
103 if (DialogResult.Yes == dlgResult)
104 {
105 orderBiz.Delete(selectedOrderID);//删除订单
106 BindData_Orders();//重新绑定订单列表
107 //选中下一条记录
108 if (selectedRowIndex > gridView.Rows.Count - 1)
109 selectedRowIndex = gridView.Rows.Count - 1;
110 if (selectedRowIndex >= 0)
111 {
112 gridView.Rows[selectedRowIndex].Selected = true;
113 }
114 }
115 }
116
117
118 }
119 }
FormEdit.cs
1 using System;
2 using System.Collections.Generic;
3 using System.ComponentModel;
4 using System.Data;
5 using System.Drawing;
6 using System.Linq;
7 using System.Text;
8 using System.Windows.Forms;
9 //新添命名空间
10 using System.Configuration;
11 using HomeShop.Model;
12 using HomeShop.BLL;
13
14 namespace HomeShop.WinForm
15 {
16 //功能：订单管理系统-新增/修改订单窗体；
17 //作者：夏春涛；
18 //日期：2011-11-30；
19 public partial class FormEdit : Form
20 {
21 //Order业务逻辑对象
22 private OrderBiz orderBiz = new OrderBiz();
23 //当前订单对象
24 private Order order = new Order();
25
26 //临时ID，起始值为0，自动递减（避免与正常的正整数ID重复）
27 private int tempID = 0;
28
29 //【窗体构造函数】
30 public FormEdit()
31 {
32 InitializeComponent();
33 //----
34 this.Text = "新增订单";//窗体标题
35 }
36
37 //【窗体构造函数】-重载，入参：要修改的订单的ID
38 public FormEdit(int orderID)
39 {
40 InitializeComponent();
41 //----
42 this.Text = "修改订单";//窗体标题
43 this.order = orderBiz.GetSingle(orderID);
44 }
45
46 //【窗体加载事件】-初始化控件的内容
47 private void FormEdit_Load(object sender, EventArgs e)
48 {
49 gridView.AutoGenerateColumns = false;//禁止DataGridView控件自动生成列
50 InitOrderState();//初始化订单状态下拉框
51 InitOrderInfo();//初始化订单信息
52 }
53
54 //初始化订单状态下拉框
55 private void InitOrderState()
56 {
57 //从数据库获取订单状态数据
58 OrderStateBiz orderStateBiz = new OrderStateBiz();
59 DataView dataView = orderStateBiz.GetTable().DefaultView;
60 //将数据绑定到订单状态下拉框
61 OrderState.ValueMember = "Code";
62 OrderState.DisplayMember = "Name";
63 OrderState.DataSource = dataView;
64 }
65
66 //初始化订单基本信息
67 private void InitOrderInfo()
68 {
69 //将当前订单基本信息显示在编辑区
70 OrderID.Text = order.OrderID.ToString();
71 CustomerName.Text = order.CustomerName;
72 CustomerPhoneNo.Text = order.CustomerPhoneNo;
73 CustomerAddress.Text = order.CustomerAddress;
74 OrderTime.Value = order.OrderTime;
75 OrderState.SelectedValue = order.OrderStateCode;
76 OrderTotal.Text = order.OrderTotal.ToString();//获取订单总金额
77 //初始化当前订单关联的商品列表
78 gridView.DataSource = order.OrderItems;
79 }
80
81 //【新增】商品
82 private void btnProductAdd_Click(object sender, EventArgs e)
83 {
84 if (!ValidateInput_Product()) return;
85
86 OrderItem orderItem = new OrderItem();
87 orderItem.OrderID = this.order.OrderID;
88 orderItem.OrderItemID = tempID--;
89 orderItem.Product = Product.Text.Trim();
90 orderItem.UnitPrice = Convert.ToDecimal(UnitPrice.Text.Replace(" ", ""));
91 orderItem.Quantity = Convert.ToInt32(Quantity.Text.Replace(" ", ""));
92 this.order.OrderItems.Add(orderItem);
93
94 gridView.DataSource = new List<OrderItem>();
95 gridView.DataSource = this.order.OrderItems;
96 OrderTotal.Text = this.order.OrderTotal.ToString();
97 gridView.Rows[gridView.Rows.Count - 1].Selected = true;
98 }
99
100 //验证用户输入-新增/修改商品信息时
101 private bool ValidateInput_Product()
102 {
103 //验证商品名称
104 if ("" == Product.Text.Trim())
105 {
106 MessageBox.Show(this, "请输入商品名称！", "提示",
107 MessageBoxButtons.OK, MessageBoxIcon.Information);
108 Product.Focus();
109 return false;
110 }
111 //验证商品单价
112 try
113 {
114 string regexString = @"^[0-9]*[0-9]+[\.]*[0-9]*$";//正则表达式-非负数
115 RegexStringValidator validator = new RegexStringValidator(regexString);
116 validator.Validate(UnitPrice.Text.Replace(" ", ""));
117 }
118 catch
119 {
120 MessageBox.Show(this, "请输入正确的商品单价（非负数）！", "提示",
121 MessageBoxButtons.OK, MessageBoxIcon.Information);
122 UnitPrice.Focus();
123 return false;
124 }
125 //验证商品数量
126 try
127 {
128 string regexString = @"^[0-9]*[1-9][0-9]*$";//正则表达式-正整数
129 RegexStringValidator validator = new RegexStringValidator(regexString);
130 validator.Validate(Quantity.Text.Replace(" ", ""));
131 }
132 catch
133 {
134 MessageBox.Show(this, "请输入正确的商品数量（正整数）！", "提示",
135 MessageBoxButtons.OK, MessageBoxIcon.Information);
136 Quantity.Focus();
137 return false;
138 }
139
140 return true;
141 }
142
143 //【修改】选中的商品
144 private void btnProductUpdate_Click(object sender, EventArgs e)
145 {
146 if (gridView.RowCount == 0) return;
147 if (!ValidateInput_Product()) return;
148
149 int selectedRowIndex = gridView.SelectedRows[0].Index;
150
151 int orderItemID = (int)gridView.Rows[selectedRowIndex].Cells["Col_OrderItemID"].Value;
152 OrderItem orderItem = this.order.OrderItems.Find(
153 delegate(OrderItem item){ return item.OrderItemID == orderItemID; });
154 orderItem.Product = Product.Text.Trim();
155 orderItem.UnitPrice = Convert.ToDecimal(UnitPrice.Text.Replace(" ", ""));
156 orderItem.Quantity = Convert.ToInt32(Quantity.Text.Replace(" ", ""));
157
158 gridView.DataSource = new List<OrderItem>();
159 gridView.DataSource = this.order.OrderItems;
160 OrderTotal.Text = this.order.OrderTotal.ToString();
161 gridView.Rows[selectedRowIndex].Selected = true;
162 }
163
164 //【删除】选中的商品
165 private void btnProductDelete_Click(object sender, EventArgs e)
166 {
167 if (gridView.RowCount == 0) return;
168
169 DialogResult dlgResult = MessageBox.Show(this, "确认要删除选中的商品吗？", "提示",
170 MessageBoxButtons.YesNo, MessageBoxIcon.Question);
171 if (DialogResult.Yes == dlgResult)
172 {
173 int selectedRowIndex = gridView.SelectedRows[0].Index;
174
175 int orderItemID = (int)gridView.SelectedRows[0].Cells["Col_OrderItemID"].Value;
176 OrderItem orderItem = this.order.OrderItems.Find(
177 delegate(OrderItem item){ return item.OrderItemID == orderItemID; });
178 this.order.OrderItems.Remove(orderItem);
179
180 gridView.DataSource = new List<OrderItem>();
181 gridView.DataSource = this.order.OrderItems;
182 OrderTotal.Text = this.order.OrderTotal.ToString();
183 //选中下一条记录
184 if (selectedRowIndex > gridView.Rows.Count - 1)
185 selectedRowIndex = gridView.Rows.Count - 1;
186 if (selectedRowIndex >= 0)
187 {
188 gridView.Rows[selectedRowIndex].Selected = true;
189 ShowSelectedRowInfo();//将选中的商品信息显示在编辑区
190 }
191 }
192 }
193
194 //【选择更改事件】-将选中的商品信息显示在编辑区
195 private void gridView_SelectionChanged(object sender, EventArgs e)
196 {
197 ShowSelectedRowInfo();
198 }
199
200 //将选中的商品信息显示在编辑区
201 private void ShowSelectedRowInfo()
202 {
203 if (gridView.SelectedRows.Count == 0) return;
204 Product.Text = gridView.SelectedRows[0].Cells["Col_Product"].Value.ToString();
205 UnitPrice.Text = gridView.SelectedRows[0].Cells["Col_UnitPrice"].Value.ToString();
206 Quantity.Text = gridView.SelectedRows[0].Cells["Col_Quantity"].Value.ToString();
207 }
208
209 //【确定】-保存新增/修改的订单
210 private void btnOK_Click(object sender, EventArgs e)
211 {
212 if (!ValidateInput_Order()) return;//验证用户输入
213
214 order.OrderStateCode = OrderState.SelectedValue.ToString();
215 order.OrderTime = OrderTime.Value;
216 order.CustomerAddress = CustomerAddress.Text.Trim();
217 order.CustomerName = CustomerName.Text.Trim();
218 order.CustomerPhoneNo = CustomerPhoneNo.Text.Trim();
219
220 if (0 == this.order.OrderID)//新增订单
221 {
222 orderBiz.Add(this.order);
223 MessageBox.Show(this, "新增订单成功！", "提示",
224 MessageBoxButtons.OK, MessageBoxIcon.Information);
225 }
226 else //修改订单
227 {
228 orderBiz.Update(this.order);
229 MessageBox.Show(this, "修改订单成功！", "提示",
230 MessageBoxButtons.OK, MessageBoxIcon.Information);
231 }
232
233 this.DialogResult = DialogResult.OK;//设置对话框结果
234 this.Close();//关闭窗体
235 }
236
237 //验证用户输入-保存新增/修改的订单时
238 private bool ValidateInput_Order()
239 {
240 //验证顾客姓名
241 if ("" == CustomerName.Text.Trim())
242 {
243 MessageBox.Show(this, "请输入顾客姓名！", "提示",
244 MessageBoxButtons.OK, MessageBoxIcon.Information);
245 CustomerName.Focus();
246 return false;
247 }
248 //验证联系电话
249 if ("" == CustomerPhoneNo.Text.Trim())
250 {
251 MessageBox.Show(this, "请输入联系电话！", "提示",
252 MessageBoxButtons.OK, MessageBoxIcon.Information);
253 CustomerPhoneNo.Focus();
254 return false;
255 }
256 //订购商品信息
257 if (0 == gridView.Rows.Count)
258 {
259 MessageBox.Show(this, "请输入订购商品信息！", "提示",
260 MessageBoxButtons.OK, MessageBoxIcon.Information);
261 Product.Focus();
262 return false;
263 }
264
265 return true;
266 }
267
268 //【取消】-关闭窗体
269 private void btnCancel_Click(object sender, EventArgs e)
270 {
271 this.Close();//关闭窗体
272 }
273 }
274 }
2 using System.Collections.Generic;
3 using System.ComponentModel;
4 using System.Data;
5 using System.Drawing;
6 using System.Linq;
7 using System.Text;
8 using System.Windows.Forms;
9 //新添命名空间
10 using System.Configuration;
11 using HomeShop.Model;
12 using HomeShop.BLL;
13
14 namespace HomeShop.WinForm
15 {
16 //功能：订单管理系统-新增/修改订单窗体；
17 //作者：夏春涛；
18 //日期：2011-11-30；
19 public partial class FormEdit : Form
20 {
21 //Order业务逻辑对象
22 private OrderBiz orderBiz = new OrderBiz();
23 //当前订单对象
24 private Order order = new Order();
25
26 //临时ID，起始值为0，自动递减（避免与正常的正整数ID重复）
27 private int tempID = 0;
28
29 //【窗体构造函数】
30 public FormEdit()
31 {
32 InitializeComponent();
33 //----
34 this.Text = "新增订单";//窗体标题
35 }
36
37 //【窗体构造函数】-重载，入参：要修改的订单的ID
38 public FormEdit(int orderID)
39 {
40 InitializeComponent();
41 //----
42 this.Text = "修改订单";//窗体标题
43 this.order = orderBiz.GetSingle(orderID);
44 }
45
46 //【窗体加载事件】-初始化控件的内容
47 private void FormEdit_Load(object sender, EventArgs e)
48 {
49 gridView.AutoGenerateColumns = false;//禁止DataGridView控件自动生成列
50 InitOrderState();//初始化订单状态下拉框
51 InitOrderInfo();//初始化订单信息
52 }
53
54 //初始化订单状态下拉框
55 private void InitOrderState()
56 {
57 //从数据库获取订单状态数据
58 OrderStateBiz orderStateBiz = new OrderStateBiz();
59 DataView dataView = orderStateBiz.GetTable().DefaultView;
60 //将数据绑定到订单状态下拉框
61 OrderState.ValueMember = "Code";
62 OrderState.DisplayMember = "Name";
63 OrderState.DataSource = dataView;
64 }
65
66 //初始化订单基本信息
67 private void InitOrderInfo()
68 {
69 //将当前订单基本信息显示在编辑区
70 OrderID.Text = order.OrderID.ToString();
71 CustomerName.Text = order.CustomerName;
72 CustomerPhoneNo.Text = order.CustomerPhoneNo;
73 CustomerAddress.Text = order.CustomerAddress;
74 OrderTime.Value = order.OrderTime;
75 OrderState.SelectedValue = order.OrderStateCode;
76 OrderTotal.Text = order.OrderTotal.ToString();//获取订单总金额
77 //初始化当前订单关联的商品列表
78 gridView.DataSource = order.OrderItems;
79 }
80
81 //【新增】商品
82 private void btnProductAdd_Click(object sender, EventArgs e)
83 {
84 if (!ValidateInput_Product()) return;
85
86 OrderItem orderItem = new OrderItem();
87 orderItem.OrderID = this.order.OrderID;
88 orderItem.OrderItemID = tempID--;
89 orderItem.Product = Product.Text.Trim();
90 orderItem.UnitPrice = Convert.ToDecimal(UnitPrice.Text.Replace(" ", ""));
91 orderItem.Quantity = Convert.ToInt32(Quantity.Text.Replace(" ", ""));
92 this.order.OrderItems.Add(orderItem);
93
94 gridView.DataSource = new List<OrderItem>();
95 gridView.DataSource = this.order.OrderItems;
96 OrderTotal.Text = this.order.OrderTotal.ToString();
97 gridView.Rows[gridView.Rows.Count - 1].Selected = true;
98 }
99
100 //验证用户输入-新增/修改商品信息时
101 private bool ValidateInput_Product()
102 {
103 //验证商品名称
104 if ("" == Product.Text.Trim())
105 {
106 MessageBox.Show(this, "请输入商品名称！", "提示",
107 MessageBoxButtons.OK, MessageBoxIcon.Information);
108 Product.Focus();
109 return false;
110 }
111 //验证商品单价
112 try
113 {
114 string regexString = @"^[0-9]*[0-9]+[\.]*[0-9]*$";//正则表达式-非负数
115 RegexStringValidator validator = new RegexStringValidator(regexString);
116 validator.Validate(UnitPrice.Text.Replace(" ", ""));
117 }
118 catch
119 {
120 MessageBox.Show(this, "请输入正确的商品单价（非负数）！", "提示",
121 MessageBoxButtons.OK, MessageBoxIcon.Information);
122 UnitPrice.Focus();
123 return false;
124 }
125 //验证商品数量
126 try
127 {
128 string regexString = @"^[0-9]*[1-9][0-9]*$";//正则表达式-正整数
129 RegexStringValidator validator = new RegexStringValidator(regexString);
130 validator.Validate(Quantity.Text.Replace(" ", ""));
131 }
132 catch
133 {
134 MessageBox.Show(this, "请输入正确的商品数量（正整数）！", "提示",
135 MessageBoxButtons.OK, MessageBoxIcon.Information);
136 Quantity.Focus();
137 return false;
138 }
139
140 return true;
141 }
142
143 //【修改】选中的商品
144 private void btnProductUpdate_Click(object sender, EventArgs e)
145 {
146 if (gridView.RowCount == 0) return;
147 if (!ValidateInput_Product()) return;
148
149 int selectedRowIndex = gridView.SelectedRows[0].Index;
150
151 int orderItemID = (int)gridView.Rows[selectedRowIndex].Cells["Col_OrderItemID"].Value;
152 OrderItem orderItem = this.order.OrderItems.Find(
153 delegate(OrderItem item){ return item.OrderItemID == orderItemID; });
154 orderItem.Product = Product.Text.Trim();
155 orderItem.UnitPrice = Convert.ToDecimal(UnitPrice.Text.Replace(" ", ""));
156 orderItem.Quantity = Convert.ToInt32(Quantity.Text.Replace(" ", ""));
157
158 gridView.DataSource = new List<OrderItem>();
159 gridView.DataSource = this.order.OrderItems;
160 OrderTotal.Text = this.order.OrderTotal.ToString();
161 gridView.Rows[selectedRowIndex].Selected = true;
162 }
163
164 //【删除】选中的商品
165 private void btnProductDelete_Click(object sender, EventArgs e)
166 {
167 if (gridView.RowCount == 0) return;
168
169 DialogResult dlgResult = MessageBox.Show(this, "确认要删除选中的商品吗？", "提示",
170 MessageBoxButtons.YesNo, MessageBoxIcon.Question);
171 if (DialogResult.Yes == dlgResult)
172 {
173 int selectedRowIndex = gridView.SelectedRows[0].Index;
174
175 int orderItemID = (int)gridView.SelectedRows[0].Cells["Col_OrderItemID"].Value;
176 OrderItem orderItem = this.order.OrderItems.Find(
177 delegate(OrderItem item){ return item.OrderItemID == orderItemID; });
178 this.order.OrderItems.Remove(orderItem);
179
180 gridView.DataSource = new List<OrderItem>();
181 gridView.DataSource = this.order.OrderItems;
182 OrderTotal.Text = this.order.OrderTotal.ToString();
183 //选中下一条记录
184 if (selectedRowIndex > gridView.Rows.Count - 1)
185 selectedRowIndex = gridView.Rows.Count - 1;
186 if (selectedRowIndex >= 0)
187 {
188 gridView.Rows[selectedRowIndex].Selected = true;
189 ShowSelectedRowInfo();//将选中的商品信息显示在编辑区
190 }
191 }
192 }
193
194 //【选择更改事件】-将选中的商品信息显示在编辑区
195 private void gridView_SelectionChanged(object sender, EventArgs e)
196 {
197 ShowSelectedRowInfo();
198 }
199
200 //将选中的商品信息显示在编辑区
201 private void ShowSelectedRowInfo()
202 {
203 if (gridView.SelectedRows.Count == 0) return;
204 Product.Text = gridView.SelectedRows[0].Cells["Col_Product"].Value.ToString();
205 UnitPrice.Text = gridView.SelectedRows[0].Cells["Col_UnitPrice"].Value.ToString();
206 Quantity.Text = gridView.SelectedRows[0].Cells["Col_Quantity"].Value.ToString();
207 }
208
209 //【确定】-保存新增/修改的订单
210 private void btnOK_Click(object sender, EventArgs e)
211 {
212 if (!ValidateInput_Order()) return;//验证用户输入
213
214 order.OrderStateCode = OrderState.SelectedValue.ToString();
215 order.OrderTime = OrderTime.Value;
216 order.CustomerAddress = CustomerAddress.Text.Trim();
217 order.CustomerName = CustomerName.Text.Trim();
218 order.CustomerPhoneNo = CustomerPhoneNo.Text.Trim();
219
220 if (0 == this.order.OrderID)//新增订单
221 {
222 orderBiz.Add(this.order);
223 MessageBox.Show(this, "新增订单成功！", "提示",
224 MessageBoxButtons.OK, MessageBoxIcon.Information);
225 }
226 else //修改订单
227 {
228 orderBiz.Update(this.order);
229 MessageBox.Show(this, "修改订单成功！", "提示",
230 MessageBoxButtons.OK, MessageBoxIcon.Information);
231 }
232
233 this.DialogResult = DialogResult.OK;//设置对话框结果
234 this.Close();//关闭窗体
235 }
236
237 //验证用户输入-保存新增/修改的订单时
238 private bool ValidateInput_Order()
239 {
240 //验证顾客姓名
241 if ("" == CustomerName.Text.Trim())
242 {
243 MessageBox.Show(this, "请输入顾客姓名！", "提示",
244 MessageBoxButtons.OK, MessageBoxIcon.Information);
245 CustomerName.Focus();
246 return false;
247 }
248 //验证联系电话
249 if ("" == CustomerPhoneNo.Text.Trim())
250 {
251 MessageBox.Show(this, "请输入联系电话！", "提示",
252 MessageBoxButtons.OK, MessageBoxIcon.Information);
253 CustomerPhoneNo.Focus();
254 return false;
255 }
256 //订购商品信息
257 if (0 == gridView.Rows.Count)
258 {
259 MessageBox.Show(this, "请输入订购商品信息！", "提示",
260 MessageBoxButtons.OK, MessageBoxIcon.Information);
261 Product.Focus();
262 return false;
263 }
264
265 return true;
266 }
267
268 //【取消】-关闭窗体
269 private void btnCancel_Click(object sender, EventArgs e)
270 {
271 this.Close();//关闭窗体
272 }
273 }
274 }
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
