给DataGridVew添加右键菜单,并实现增删改等功能

本人以前用PB做过一些开发，挺喜欢DATAWINDOW的。在学习C＃时发现给DataGirdView加上右键菜单的效果和PB中的DATAWINDOW有相同的效果。其中数据库的操作应用的SQLDataAdatper，下面源码奉上，欢迎朋友们提出指正和意见。
首先，先建立一个Form窗口取名为DataGridViewDemo 从工具箱中选择控件，并设置属性如下
DataGridView  name属性 dataGridView
TextBox            name属性 txtContent
Button              name属性  btSave  Text 属性  保存
Button              name 属性 btExit    Text属性  退出

DataGridViewDemo 类代码如下

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. using System.Data.SqlClient;
   
10. namespace C15Demo
    
11. {
    
12.     public partial class DataGridViewDemo : Form
    
13.     {
    
14.         //全局变量
    
15.         private SqlDataAdapter adapter = null;
    
16.         private DataTable dt = null;
    
17.         public DataGridViewDemo()
    
18.         {
    
19.             InitializeComponent();
    
20.         }
    
21.         ///
    
    
22.         /// 初始化SQLDataAdapter类添加对数据表的增删改操作
    
23.         ///
    
24.         private void InitAdapter()
    
25.         {
    
26.             SqlConnection connection = new SqlConnection();
    
27.             connection.ConnectionString = "Persist Security Info=false;Integrated Security=SSPI;Initial Catalog=Northwind;server=(local)";
    
28.             adapter = new SqlDataAdapter("select ProductID,ProductName,UnitPrice,Discontinued from Products", connection);
    
29.             adapter.FillLoadOption = LoadOption.OverwriteChanges;
    
30.             //添加修改命令
    
31.             SqlCommand UpdataCommand = new SqlCommand();
    
32.             UpdataCommand.Connection = connection;
    
33.             UpdataCommand.CommandText = "Update Products set ProductName = @ProductName,UnitPrice=@UnitPrice,Discontinued = @Discontinued where ProductID=@Productid ";
    
34.             UpdataCommand.Parameters.Add("@ProductID", SqlDbType.Int, 4, "ProductID");
    
35.             UpdataCommand.Parameters.Add("@ProductName", SqlDbType.VarChar, 50, "ProductName");
    
36.             UpdataCommand.Parameters.Add("@UnitPrice", SqlDbType.Money, 20, "UnitPrice");
    
37.             UpdataCommand.Parameters.Add("@Discontinued", SqlDbType.Bit, 1, "Discontinued");
    
38.             adapter.UpdateCommand = UpdataCommand;
    
39.             //添加新增
    
40.             SqlCommand InsertCommand = new SqlCommand();
    
41.             InsertCommand.Connection = connection;
    
42.             InsertCommand.CommandText = "Insert into Products (ProductName,UnitPrice,Discontinued)values(@ProductName,@UnitPrice,@Discontinued) ";
    
43.             InsertCommand.Parameters.Add("@ProductName", SqlDbType.VarChar, 50, "ProductName");
    
44.             InsertCommand.Parameters.Add("@UnitPrice", SqlDbType.Money, 20, "UnitPrice");
    
45.             InsertCommand.Parameters.Add("@Discontinued", SqlDbType.Bit, 1, "Discontinued");
    
46.             adapter.InsertCommand = InsertCommand;
    
47.             //添加删除
    
48.             SqlCommand DeleteCommand = new SqlCommand();
    
49.             DeleteCommand.Connection = connection;
    
50.             DeleteCommand.CommandText = "Delete Products where ProductID=@ProductID ";
    
51.             DeleteCommand.Parameters.Add("@ProductID", SqlDbType.Int, 4, "ProductID");
    
52.             adapter.DeleteCommand = DeleteCommand;
    
53.         }
    
54.         ///
    
    
55.         /// 初始化DataGridView并绑定列，给DataGridView添加右键菜单
    
56.         ///
    
57.         /// DataGrivView控件
    
58.         private void InitDataGridView(DataGridView dataGridView)
    
59.         {
    
60.             dataGridView.AutoGenerateColumns = false;
    
61.             dataGridView.AllowUserToAddRows = false  ;
    
62.             dataGridView.AllowUserToDeleteRows = false  ;
    
63.             dataGridView.ColumnHeadersHeightSizeMode = DataGridViewColumnHeadersHeightSizeMode.AutoSize;
    
64.             dataGridView.EditMode = DataGridViewEditMode.EditOnEnter;
    
65.             dataGridView.MultiSelect = false;
    
66.             dataGridView.ScrollBars = ScrollBars.Vertical;
    
67.             dataGridView.VirtualMode = true;
    
68.             //添加列
    
69.             DataGridViewTextBoxColumn Column1 = new DataGridViewTextBoxColumn();
    
70.             Column1.DataPropertyName = "ProductID";
    
71.             Column1.HeaderText = "产品 ID";
    
72.             Column1.Name = "Column1";
    
73.             //Column1.ReadOnly = true;
    
74.             DataGridViewTextBoxColumn Column2 = new DataGridViewTextBoxColumn();
    
75.             Column2.DataPropertyName = "ProductName";
    
76.             Column2.HeaderText = "产品名称";
    
77.             Column2.Name = "Column2";
    
78.             Column2.Width = 165;
    
79.             DataGridViewTextBoxColumn Column3 = new DataGridViewTextBoxColumn();
    
80.             Column3.DataPropertyName = "UnitPrice";
    
81.             Column3.HeaderText = "价格";
    
82.             Column3.Name = "Column3";
    
83.             DataGridViewCheckBoxColumn Column4 = new DataGridViewCheckBoxColumn();
    
84.             Column4.DataPropertyName = "Discontinued";
    
85.             Column4.HeaderText = "是否使用";
    
86.             Column4.Name = "Column4";
    
87.             dataGridView.Columns.AddRange(new System.Windows.Forms.DataGridViewColumn[] { Column1, Column2, Column3 ,Column4 });
    
88.             //添加右键菜单
    
89.             ContextMenuStrip contextMenuStrip = new ContextMenuStrip();
    
90.             contextMenuStrip.ShowCheckMargin = false;
    
91.             contextMenuStrip.ShowImageMargin = false;
    
92.             contextMenuStrip.ShowItemToolTips = true;
    
93.             contextMenuStrip.TextDirection = ToolStripTextDirection.Horizontal;
    
94.             contextMenuStrip.Opening += new CancelEventHandler(contextMenuStrip_Opening);
    
95.             dataGridView.ContextMenuStrip = contextMenuStrip;
    
96.             dataGridView.CurrentCellChanged += new EventHandler(dataGridView_CurrentCellChanged);
    
97.         }
    

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