5.使用ADO.NET实现（三层架构篇-使用List传递数据）（2）
作者：夏春涛 xchunta@163.com
转载请注明来源：http://www.cnblogs.com/SummerRain/archive/2012/07/26/2610957.html
5.4 界面层HomeShop.WinForm
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.Model;
11 using HomeShop.BLL;
12
13 namespace HomeShop.WinForm
14 {
15 //功能：订单管理系统-主界面窗体；
16 //作者：夏春涛；
17 //日期：2011-12-02；
18 public partial class FormMain : Form
19 {
20 //Order业务逻辑对象
21 private OrderBiz orderBiz = new OrderBiz();
22
23 //【窗体构造函数】
24 public FormMain()
25 {
26 InitializeComponent();
27 }
28
29 //【窗体加载事件】
30 private void FormMain_Load(object sender, EventArgs e)
31 {
32 gridView.AutoGenerateColumns = false;//禁止DataGridView控件自动生成列
33 BindData_Orders();//绑定订单列表
34 }
35
36 //绑定订单列表
37 private void BindData_Orders()
38 {
39 txtCustomerName.Clear();
40 List<Order> list = orderBiz.GetList();
41 gridView.DataSource = list;
42 labRecordCount.Text = "共 " + list.Count.ToString() + " 条记录";
43 }
44
45 //【查询】订单
46 private void btnQuery_Click(object sender, EventArgs e)
47 {
48 if ("" == txtCustomerName.Text.Trim())
49 {
50 MessageBox.Show(this, "请输入要查询的顾客姓名关键词！", "提示",
51 MessageBoxButtons.OK, MessageBoxIcon.Information);
52 txtCustomerName.Focus();
53 return;
54 }
55 List<Order> list = orderBiz.GetList(txtCustomerName.Text.Trim());
56 gridView.DataSource = list;
57 labRecordCount.Text = "共 " + list.Count.ToString() + " 条记录";
58 }
59
60 //【全部显示】订单
61 private void btnShowAll_Click(object sender, EventArgs e)
62 {
63 BindData_Orders();
64 }
65
66 //【新增】订单
67 private void menuAdd_Click(object sender, EventArgs e)
68 {
69 FormEdit formEdit = new FormEdit();
70 DialogResult dlgResult = formEdit.ShowDialog(this);//显示为模式对话框
71 if (DialogResult.OK == dlgResult)
72 {
73 BindData_Orders();//重新绑定订单列表
74 }
75 formEdit.Dispose();//释放窗体资源
76 }
77
78 //【修改】订单
79 private void menuUpdate_Click(object sender, EventArgs e)
80 {
81 if (gridView.RowCount == 0) return;
82
83 int selectedRowIndex = gridView.SelectedRows[0].Index;
84 int selectedOrderID = (int)gridView.SelectedRows[0].Cells["Col_OrderID"].Value;
85 FormEdit formEdit = new FormEdit(selectedOrderID);
86 DialogResult dlgResult = formEdit.ShowDialog(this);//显示为模式对话框
87 if (DialogResult.OK == dlgResult)
88 {
89 BindData_Orders();//重新绑定订单列表
90 gridView.Rows[selectedRowIndex].Selected = true;//依然选中当前行
91 }
92 formEdit.Dispose();//释放窗体资源
93 }
94
95 //【删除】订单
96 private void menuDelete_Click(object sender, EventArgs e)
97 {
98 if (gridView.RowCount == 0) return;
99
100 int selectedRowIndex = gridView.SelectedRows[0].Index;
101 int selectedOrderID = (int)gridView.SelectedRows[0].Cells["Col_OrderID"].Value;
102 DialogResult dlgResult = MessageBox.Show(this, "确认要删除选中的订单吗？", "提示",
103 MessageBoxButtons.YesNo, MessageBoxIcon.Question);
104 if (DialogResult.Yes == dlgResult)
105 {
106 orderBiz.Delete(selectedOrderID);//删除订单
107 BindData_Orders();//重新绑定订单列表
108 //选中下一条记录
109 if (selectedRowIndex > gridView.Rows.Count - 1)
110 selectedRowIndex = gridView.Rows.Count - 1;
111 if (selectedRowIndex >= 0)
112 {
113 gridView.Rows[selectedRowIndex].Selected = true;
114 }
115 }
116 }
117
118
119 }
120 }
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.Model;
11 using HomeShop.BLL;
12
13 namespace HomeShop.WinForm
14 {
15 //功能：订单管理系统-主界面窗体；
16 //作者：夏春涛；
17 //日期：2011-12-02；
18 public partial class FormMain : Form
19 {
20 //Order业务逻辑对象
21 private OrderBiz orderBiz = new OrderBiz();
22
23 //【窗体构造函数】
24 public FormMain()
25 {
26 InitializeComponent();
27 }
28
29 //【窗体加载事件】
30 private void FormMain_Load(object sender, EventArgs e)
31 {
32 gridView.AutoGenerateColumns = false;//禁止DataGridView控件自动生成列
33 BindData_Orders();//绑定订单列表
34 }
35
36 //绑定订单列表
37 private void BindData_Orders()
38 {
39 txtCustomerName.Clear();
40 List<Order> list = orderBiz.GetList();
41 gridView.DataSource = list;
42 labRecordCount.Text = "共 " + list.Count.ToString() + " 条记录";
43 }
44
45 //【查询】订单
46 private void btnQuery_Click(object sender, EventArgs e)
47 {
48 if ("" == txtCustomerName.Text.Trim())
49 {
50 MessageBox.Show(this, "请输入要查询的顾客姓名关键词！", "提示",
51 MessageBoxButtons.OK, MessageBoxIcon.Information);
52 txtCustomerName.Focus();
53 return;
54 }
55 List<Order> list = orderBiz.GetList(txtCustomerName.Text.Trim());
56 gridView.DataSource = list;
57 labRecordCount.Text = "共 " + list.Count.ToString() + " 条记录";
58 }
59
60 //【全部显示】订单
61 private void btnShowAll_Click(object sender, EventArgs e)
62 {
63 BindData_Orders();
64 }
65
66 //【新增】订单
67 private void menuAdd_Click(object sender, EventArgs e)
68 {
69 FormEdit formEdit = new FormEdit();
70 DialogResult dlgResult = formEdit.ShowDialog(this);//显示为模式对话框
71 if (DialogResult.OK == dlgResult)
72 {
73 BindData_Orders();//重新绑定订单列表
74 }
75 formEdit.Dispose();//释放窗体资源
76 }
77
78 //【修改】订单
79 private void menuUpdate_Click(object sender, EventArgs e)
80 {
81 if (gridView.RowCount == 0) return;
82
83 int selectedRowIndex = gridView.SelectedRows[0].Index;
84 int selectedOrderID = (int)gridView.SelectedRows[0].Cells["Col_OrderID"].Value;
85 FormEdit formEdit = new FormEdit(selectedOrderID);
86 DialogResult dlgResult = formEdit.ShowDialog(this);//显示为模式对话框
87 if (DialogResult.OK == dlgResult)
88 {
89 BindData_Orders();//重新绑定订单列表
90 gridView.Rows[selectedRowIndex].Selected = true;//依然选中当前行
91 }
92 formEdit.Dispose();//释放窗体资源
93 }
94
95 //【删除】订单
96 private void menuDelete_Click(object sender, EventArgs e)
97 {
98 if (gridView.RowCount == 0) return;
99
100 int selectedRowIndex = gridView.SelectedRows[0].Index;
101 int selectedOrderID = (int)gridView.SelectedRows[0].Cells["Col_OrderID"].Value;
102 DialogResult dlgResult = MessageBox.Show(this, "确认要删除选中的订单吗？", "提示",
103 MessageBoxButtons.YesNo, MessageBoxIcon.Question);
104 if (DialogResult.Yes == dlgResult)
105 {
106 orderBiz.Delete(selectedOrderID);//删除订单
107 BindData_Orders();//重新绑定订单列表
108 //选中下一条记录
109 if (selectedRowIndex > gridView.Rows.Count - 1)
110 selectedRowIndex = gridView.Rows.Count - 1;
111 if (selectedRowIndex >= 0)
112 {
113 gridView.Rows[selectedRowIndex].Selected = true;
114 }
115 }
116 }
117
118
119 }
120 }
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：2011-12-02；
19 public partial class FormEdit : Form
20 {
21 //Order业务逻辑对象
22 private OrderBiz orderBiz = new OrderBiz();
23
24 //当前订单对象
25 private Order order = new Order();
26
27 //临时ID，起始值为0，自动递减（避免与正常的正整数ID重复）
28 private int tempID = 0;
29
30 //【窗体构造函数】
31 public FormEdit()
32 {
33 InitializeComponent();
34 //----
35 this.Text = "新增订单";//窗体标题
36 }
37
38 //【窗体构造函数】-重载，入参：要修改的订单的ID
39 public FormEdit(int orderID)
40 {
41 InitializeComponent();
42 //----
43 this.Text = "修改订单";//窗体标题
44 this.order = orderBiz.GetSingle(orderID);
45 }
46
47 //【窗体加载事件】-初始化控件的内容
48 private void FormEdit_Load(object sender, EventArgs e)
49 {
50 gridView.AutoGenerateColumns = false;//禁止DataGridView控件自动生成列
51 InitOrderState();//初始化订单状态下拉框
52 InitOrderInfo();//初始化订单信息
53 }
54
55 //初始化订单状态下拉框
56 private void InitOrderState()
57 {
58 OrderStateBiz orderStateBiz = new OrderStateBiz();
59 OrderState.DataSource = orderStateBiz.GetList();
60 OrderState.ValueMember = "Code";
61 OrderState.DisplayMember = "Name";
62 }
63
64 //初始化订单基本信息
65 private void InitOrderInfo()
66 {
67 //将当前订单基本信息显示在编辑区
68 OrderID.Text = order.OrderID.ToString();
69 CustomerName.Text = order.CustomerName;
70 CustomerPhoneNo.Text = order.CustomerPhoneNo;
71 CustomerAddress.Text = order.CustomerAddress;
72 OrderTime.Value = order.OrderTime;
73 OrderState.SelectedValue = order.OrderStateCode;
74 OrderTotal.Text = order.OrderTotal.ToString();//获取订单总金额
75 //初始化当前订单关联的商品列表
76 gridView.DataSource = order.OrderItems;
77 }
78
79 //【新增】商品
80 private void btnProductAdd_Click(object sender, EventArgs e)
81 {
82 if (!ValidateInput_Product()) return;
83
84 OrderItem orderItem = new OrderItem();
85 orderItem.OrderID = this.order.OrderID;
86 orderItem.OrderItemID = tempID--;
87 orderItem.Product = Product.Text.Trim();
88 orderItem.UnitPrice = Convert.ToDecimal(UnitPrice.Text.Replace(" ", ""));
89 orderItem.Quantity = Convert.ToInt32(Quantity.Text.Replace(" ", ""));
90 this.order.OrderItems.Add(orderItem);
91
92 gridView.DataSource = new List<OrderItem>();
93 gridView.DataSource = this.order.OrderItems;
94 OrderTotal.Text = this.order.OrderTotal.ToString();
95 gridView.Rows[gridView.Rows.Count - 1].Selected = true;
96 }
97
98 //验证用户输入-新增/修改商品信息时
99 private bool ValidateInput_Product()
100 {
101 //验证商品名称
102 if ("" == Product.Text.Trim())
103 {
104 MessageBox.Show(this, "请输入商品名称！", "提示",
105 MessageBoxButtons.OK, MessageBoxIcon.Information);
106 Product.Focus();
107 return false;
108 }
109 //验证商品单价
110 try
111 {
112 string regexString = @"^[0-9]*[0-9]+[\.]*[0-9]*$";//正则表达式-非负数
113 RegexStringValidator validator = new RegexStringValidator(regexString);
114 validator.Validate(UnitPrice.Text.Replace(" ", ""));
115 }
116 catch
117 {
118 MessageBox.Show(this, "请输入正确的商品单价（非负数）！", "提示",
119 MessageBoxButtons.OK, MessageBoxIcon.Information);
120 UnitPrice.Focus();
121 return false;
122 }
123 //验证商品数量
124 try
125 {
126 string regexString = @"^[0-9]*[1-9][0-9]*$";//正则表达式-正整数
127 RegexStringValidator validator = new RegexStringValidator(regexString);
128 validator.Validate(Quantity.Text.Replace(" ", ""));
129 }
130 catch
131 {
132 MessageBox.Show(this, "请输入正确的商品数量（正整数）！", "提示",
133 MessageBoxButtons.OK, MessageBoxIcon.Information);
134 Quantity.Focus();
135 return false;
136 }
137
138 return true;
139 }
140
141 //【修改】选中的商品
142 private void btnProductUpdate_Click(object sender, EventArgs e)
143 {
144 if (gridView.RowCount == 0) return;
145 if (!ValidateInput_Product()) return;
146
147 int selectedRowIndex = gridView.SelectedRows[0].Index;
148
149 int orderItemID = (int)gridView.Rows[selectedRowIndex].Cells["Col_OrderItemID"].Value;
150 OrderItem orderItem = this.order.OrderItems.Find(
151 delegate(OrderItem item){ return item.OrderItemID == orderItemID; });
152 orderItem.Product = Product.Text.Trim();
153 orderItem.UnitPrice = Convert.ToDecimal(UnitPrice.Text.Replace(" ", ""));
154 orderItem.Quantity = Convert.ToInt32(Quantity.Text.Replace(" ", ""));
155
156 gridView.DataSource = new List<OrderItem>();
157 gridView.DataSource = this.order.OrderItems;
158 OrderTotal.Text = this.order.OrderTotal.ToString();
159 gridView.Rows[selectedRowIndex].Selected = true;
160 }
161
162 //【删除】选中的商品
163 private void btnProductDelete_Click(object sender, EventArgs e)
164 {
165 if (gridView.RowCount == 0) return;
166
167 DialogResult dlgResult = MessageBox.Show(this, "确认要删除选中的商品吗？", "提示",
168 MessageBoxButtons.YesNo, MessageBoxIcon.Question);
169 if (DialogResult.Yes == dlgResult)
170 {
171 int selectedRowIndex = gridView.SelectedRows[0].Index;
172
173 int orderItemID = (int)gridView.SelectedRows[0].Cells["Col_OrderItemID"].Value;
174 OrderItem orderItem = this.order.OrderItems.Find(
175 delegate(OrderItem item){ return item.OrderItemID == orderItemID; });
176 this.order.OrderItems.Remove(orderItem);
177
178 gridView.DataSource = new List<OrderItem>();
179 gridView.DataSource = this.order.OrderItems;
180 OrderTotal.Text = this.order.OrderTotal.ToString();
181 //选中下一条记录
182 if (selectedRowIndex > gridView.Rows.Count - 1)
183 selectedRowIndex = gridView.Rows.Count - 1;
184 if (selectedRowIndex >= 0)
185 {
186 gridView.Rows[selectedRowIndex].Selected = true;
187 ShowSelectedRowInfo();//将选中的商品信息显示在编辑区
188 }
189 }
190 }
191
192 //【选择更改事件】-将选中的商品信息显示在编辑区
193 private void gridView_SelectionChanged(object sender, EventArgs e)
194 {
195 ShowSelectedRowInfo();
196 }
197
198 //将选中的商品信息显示在编辑区
199 private void ShowSelectedRowInfo()
200 {
201 if (gridView.SelectedRows.Count == 0) return;
202 Product.Text = gridView.SelectedRows[0].Cells["Col_Product"].Value.ToString();
203 UnitPrice.Text = gridView.SelectedRows[0].Cells["Col_UnitPrice"].Value.ToString();
204 Quantity.Text = gridView.SelectedRows[0].Cells["Col_Quantity"].Value.ToString();
205 }
206
207 //【确定】-保存新增/修改的订单
208 private void btnOK_Click(object sender, EventArgs e)
209 {
210 if (!ValidateInput_Order()) return;//验证用户输入
211
212 order.OrderStateCode = OrderState.SelectedValue.ToString();
213 order.OrderTime = OrderTime.Value;
214 order.CustomerAddress = CustomerAddress.Text.Trim();
215 order.CustomerName = CustomerName.Text.Trim();
216 order.CustomerPhoneNo = CustomerPhoneNo.Text.Trim();
217
218 if (0 == this.order.OrderID)//新增订单
219 {
220 orderBiz.Add(this.order);
221 MessageBox.Show(this, "新增订单成功！", "提示",
222 MessageBoxButtons.OK, MessageBoxIcon.Information);
223 }
224 else //修改订单
225 {
226 orderBiz.Update(this.order);
227 MessageBox.Show(this, "修改订单成功！", "提示",
228 MessageBoxButtons.OK, MessageBoxIcon.Information);
229 }
230
231 this.DialogResult = DialogResult.OK;//设置对话框结果
232 this.Close();//关闭窗体
233 }
234
235 //验证用户输入-保存新增/修改的订单时
236 private bool ValidateInput_Order()
237 {
238 //验证顾客姓名
239 if ("" == CustomerName.Text.Trim())
240 {
241 MessageBox.Show(this, "请输入顾客姓名！", "提示",
242 MessageBoxButtons.OK, MessageBoxIcon.Information);
243 CustomerName.Focus();
244 return false;
245 }
246 //验证联系电话
247 if ("" == CustomerPhoneNo.Text.Trim())
248 {
249 MessageBox.Show(this, "请输入联系电话！", "提示",
250 MessageBoxButtons.OK, MessageBoxIcon.Information);
251 CustomerPhoneNo.Focus();
252 return false;
253 }
254 //订购商品信息
255 if (0 == gridView.Rows.Count)
256 {
257 MessageBox.Show(this, "请输入订购商品信息！", "提示",
258 MessageBoxButtons.OK, MessageBoxIcon.Information);
259 Product.Focus();
260 return false;
261 }
262
263 return true;
264 }
265
266 //【取消】-关闭窗体
267 private void btnCancel_Click(object sender, EventArgs e)
268 {
269 this.Close();//关闭窗体
270 }
271 }
272 }
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：2011-12-02；
19 public partial class FormEdit : Form
20 {
21 //Order业务逻辑对象
22 private OrderBiz orderBiz = new OrderBiz();
23
24 //当前订单对象
25 private Order order = new Order();
26
27 //临时ID，起始值为0，自动递减（避免与正常的正整数ID重复）
28 private int tempID = 0;
29
30 //【窗体构造函数】
31 public FormEdit()
32 {
33 InitializeComponent();
34 //----
35 this.Text = "新增订单";//窗体标题
36 }
37
38 //【窗体构造函数】-重载，入参：要修改的订单的ID
39 public FormEdit(int orderID)
40 {
41 InitializeComponent();
42 //----
43 this.Text = "修改订单";//窗体标题
44 this.order = orderBiz.GetSingle(orderID);
45 }
46
47 //【窗体加载事件】-初始化控件的内容
48 private void FormEdit_Load(object sender, EventArgs e)
49 {
50 gridView.AutoGenerateColumns = false;//禁止DataGridView控件自动生成列
51 InitOrderState();//初始化订单状态下拉框
52 InitOrderInfo();//初始化订单信息
53 }
54
55 //初始化订单状态下拉框
56 private void InitOrderState()
57 {
58 OrderStateBiz orderStateBiz = new OrderStateBiz();
59 OrderState.DataSource = orderStateBiz.GetList();
60 OrderState.ValueMember = "Code";
61 OrderState.DisplayMember = "Name";
62 }
63
64 //初始化订单基本信息
65 private void InitOrderInfo()
66 {
67 //将当前订单基本信息显示在编辑区
68 OrderID.Text = order.OrderID.ToString();
69 CustomerName.Text = order.CustomerName;
70 CustomerPhoneNo.Text = order.CustomerPhoneNo;
71 CustomerAddress.Text = order.CustomerAddress;
72 OrderTime.Value = order.OrderTime;
73 OrderState.SelectedValue = order.OrderStateCode;
74 OrderTotal.Text = order.OrderTotal.ToString();//获取订单总金额
75 //初始化当前订单关联的商品列表
76 gridView.DataSource = order.OrderItems;
77 }
78
79 //【新增】商品
80 private void btnProductAdd_Click(object sender, EventArgs e)
81 {
82 if (!ValidateInput_Product()) return;
83
84 OrderItem orderItem = new OrderItem();
85 orderItem.OrderID = this.order.OrderID;
86 orderItem.OrderItemID = tempID--;
87 orderItem.Product = Product.Text.Trim();
88 orderItem.UnitPrice = Convert.ToDecimal(UnitPrice.Text.Replace(" ", ""));
89 orderItem.Quantity = Convert.ToInt32(Quantity.Text.Replace(" ", ""));
90 this.order.OrderItems.Add(orderItem);
91
92 gridView.DataSource = new List<OrderItem>();
93 gridView.DataSource = this.order.OrderItems;
94 OrderTotal.Text = this.order.OrderTotal.ToString();
95 gridView.Rows[gridView.Rows.Count - 1].Selected = true;
96 }
97
98 //验证用户输入-新增/修改商品信息时
99 private bool ValidateInput_Product()
100 {
101 //验证商品名称
102 if ("" == Product.Text.Trim())
103 {
104 MessageBox.Show(this, "请输入商品名称！", "提示",
105 MessageBoxButtons.OK, MessageBoxIcon.Information);
106 Product.Focus();
107 return false;
108 }
109 //验证商品单价
110 try
111 {
112 string regexString = @"^[0-9]*[0-9]+[\.]*[0-9]*$";//正则表达式-非负数
113 RegexStringValidator validator = new RegexStringValidator(regexString);
114 validator.Validate(UnitPrice.Text.Replace(" ", ""));
115 }
116 catch
117 {
118 MessageBox.Show(this, "请输入正确的商品单价（非负数）！", "提示",
119 MessageBoxButtons.OK, MessageBoxIcon.Information);
120 UnitPrice.Focus();
121 return false;
122 }
123 //验证商品数量
124 try
125 {
126 string regexString = @"^[0-9]*[1-9][0-9]*$";//正则表达式-正整数
127 RegexStringValidator validator = new RegexStringValidator(regexString);
128 validator.Validate(Quantity.Text.Replace(" ", ""));
129 }
130 catch
131 {
132 MessageBox.Show(this, "请输入正确的商品数量（正整数）！", "提示",
133 MessageBoxButtons.OK, MessageBoxIcon.Information);
134 Quantity.Focus();
135 return false;
136 }
137
138 return true;
139 }
140
141 //【修改】选中的商品
142 private void btnProductUpdate_Click(object sender, EventArgs e)
143 {
144 if (gridView.RowCount == 0) return;
145 if (!ValidateInput_Product()) return;
146
147 int selectedRowIndex = gridView.SelectedRows[0].Index;
148
149 int orderItemID = (int)gridView.Rows[selectedRowIndex].Cells["Col_OrderItemID"].Value;
150 OrderItem orderItem = this.order.OrderItems.Find(
151 delegate(OrderItem item){ return item.OrderItemID == orderItemID; });
152 orderItem.Product = Product.Text.Trim();
153 orderItem.UnitPrice = Convert.ToDecimal(UnitPrice.Text.Replace(" ", ""));
154 orderItem.Quantity = Convert.ToInt32(Quantity.Text.Replace(" ", ""));
155
156 gridView.DataSource = new List<OrderItem>();
157 gridView.DataSource = this.order.OrderItems;
158 OrderTotal.Text = this.order.OrderTotal.ToString();
159 gridView.Rows[selectedRowIndex].Selected = true;
160 }
161
162 //【删除】选中的商品
163 private void btnProductDelete_Click(object sender, EventArgs e)
164 {
165 if (gridView.RowCount == 0) return;
166
167 DialogResult dlgResult = MessageBox.Show(this, "确认要删除选中的商品吗？", "提示",
168 MessageBoxButtons.YesNo, MessageBoxIcon.Question);
169 if (DialogResult.Yes == dlgResult)
170 {
171 int selectedRowIndex = gridView.SelectedRows[0].Index;
172
173 int orderItemID = (int)gridView.SelectedRows[0].Cells["Col_OrderItemID"].Value;
174 OrderItem orderItem = this.order.OrderItems.Find(
175 delegate(OrderItem item){ return item.OrderItemID == orderItemID; });
176 this.order.OrderItems.Remove(orderItem);
177
178 gridView.DataSource = new List<OrderItem>();
179 gridView.DataSource = this.order.OrderItems;
180 OrderTotal.Text = this.order.OrderTotal.ToString();
181 //选中下一条记录
182 if (selectedRowIndex > gridView.Rows.Count - 1)
183 selectedRowIndex = gridView.Rows.Count - 1;
184 if (selectedRowIndex >= 0)
185 {
186 gridView.Rows[selectedRowIndex].Selected = true;
187 ShowSelectedRowInfo();//将选中的商品信息显示在编辑区
188 }
189 }
190 }
191
192 //【选择更改事件】-将选中的商品信息显示在编辑区
193 private void gridView_SelectionChanged(object sender, EventArgs e)
194 {
195 ShowSelectedRowInfo();
196 }
197
198 //将选中的商品信息显示在编辑区
199 private void ShowSelectedRowInfo()
200 {
201 if (gridView.SelectedRows.Count == 0) return;
202 Product.Text = gridView.SelectedRows[0].Cells["Col_Product"].Value.ToString();
203 UnitPrice.Text = gridView.SelectedRows[0].Cells["Col_UnitPrice"].Value.ToString();
204 Quantity.Text = gridView.SelectedRows[0].Cells["Col_Quantity"].Value.ToString();
205 }
206
207 //【确定】-保存新增/修改的订单
208 private void btnOK_Click(object sender, EventArgs e)
209 {
210 if (!ValidateInput_Order()) return;//验证用户输入
211
212 order.OrderStateCode = OrderState.SelectedValue.ToString();
213 order.OrderTime = OrderTime.Value;
214 order.CustomerAddress = CustomerAddress.Text.Trim();
215 order.CustomerName = CustomerName.Text.Trim();
216 order.CustomerPhoneNo = CustomerPhoneNo.Text.Trim();
217
218 if (0 == this.order.OrderID)//新增订单
219 {
220 orderBiz.Add(this.order);
221 MessageBox.Show(this, "新增订单成功！", "提示",
222 MessageBoxButtons.OK, MessageBoxIcon.Information);
223 }
224 else //修改订单
225 {
226 orderBiz.Update(this.order);
227 MessageBox.Show(this, "修改订单成功！", "提示",
228 MessageBoxButtons.OK, MessageBoxIcon.Information);
229 }
230
231 this.DialogResult = DialogResult.OK;//设置对话框结果
232 this.Close();//关闭窗体
233 }
234
235 //验证用户输入-保存新增/修改的订单时
236 private bool ValidateInput_Order()
237 {
238 //验证顾客姓名
239 if ("" == CustomerName.Text.Trim())
240 {
241 MessageBox.Show(this, "请输入顾客姓名！", "提示",
242 MessageBoxButtons.OK, MessageBoxIcon.Information);
243 CustomerName.Focus();
244 return false;
245 }
246 //验证联系电话
247 if ("" == CustomerPhoneNo.Text.Trim())
248 {
249 MessageBox.Show(this, "请输入联系电话！", "提示",
250 MessageBoxButtons.OK, MessageBoxIcon.Information);
251 CustomerPhoneNo.Focus();
252 return false;
253 }
254 //订购商品信息
255 if (0 == gridView.Rows.Count)
256 {
257 MessageBox.Show(this, "请输入订购商品信息！", "提示",
258 MessageBoxButtons.OK, MessageBoxIcon.Information);
259 Product.Focus();
260 return false;
261 }
262
263 return true;
264 }
265
266 //【取消】-关闭窗体
267 private void btnCancel_Click(object sender, EventArgs e)
268 {
269 this.Close();//关闭窗体
270 }
271 }
272 }