form1.cs

Csharp实例编程百例.rar

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Data.OleDb;

namespace DataGridApp
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Data.DataSet dataSet1;
		private System.Windows.Forms.DataGrid dataGrid1;
		private System.Windows.Forms.Button button1;
		private System.Data.OleDb.OleDbCommand oleDbCommand1;

		private OleDbCommandBuilder cb;
		private OleDbDataAdapter da;

		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;

		public Form1()
		{
			//
			// Windows 窗体设计器支持所必需的
			//
			InitializeComponent();

			//
			// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
			//
		}

		/// <summary>
		/// 清理所有正在使用的资源。
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{
			this.dataSet1 = new System.Data.DataSet();
			this.oleDbCommand1 = new System.Data.OleDb.OleDbCommand();
			this.button1 = new System.Windows.Forms.Button();
			this.dataGrid1 = new System.Windows.Forms.DataGrid();
			((System.ComponentModel.ISupportInitialize)(this.dataSet1)).BeginInit();
			((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).BeginInit();
			this.SuspendLayout();
			// 
			// dataSet1
			// 
			this.dataSet1.DataSetName = "NewDataSet";
			this.dataSet1.Locale = new System.Globalization.CultureInfo("zh-CN");
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(136, 160);
			this.button1.Name = "button1";
			this.button1.TabIndex = 0;
			this.button1.Text = "Update";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// dataGrid1
			// 
			this.dataGrid1.DataMember = "";
			this.dataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText;
			this.dataGrid1.Location = new System.Drawing.Point(8, 8);
			this.dataGrid1.Name = "dataGrid1";
			this.dataGrid1.Size = new System.Drawing.Size(336, 144);
			this.dataGrid1.TabIndex = 1;
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(352, 198);
			this.Controls.AddRange(new System.Windows.Forms.Control[] {
																		  this.dataGrid1,
																		  this.button1});
			this.Name = "Form1";
			this.Text = "Form1";
			this.Load += new System.EventHandler(this.Form1_Load);
			((System.ComponentModel.ISupportInitialize)(this.dataSet1)).EndInit();
			((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).EndInit();
			this.ResumeLayout(false);

		}
		#endregion

		/// <summary>
		/// 应用程序的主入口点。
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}

		private void Form1_Load(object sender, System.EventArgs e)
		{
			string ConStr = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=E:\C#Program\C#100\Chapter3\NWIND.mdb";
    
			// Get Data from multiple tables table 
			string SQL = "SELECT * FROM Employees";

			OleDbConnection Conn = new OleDbConnection(ConStr);
      
			// Create a SqlCommand object 
			oleDbCommand1 = new OleDbCommand(SQL, Conn);

			// Create a SqlDataAdapter object 
			da = new OleDbDataAdapter();
			da.SelectCommand = oleDbCommand1;

			// Create a SqlCommandBuilder object 
			cb = new OleDbCommandBuilder(da);

			// Fill DataSet with data from Employees table 
			da.Fill(dataSet1, "Employees");

			// Bind the DataGrid at run time 
			dataGrid1.SetDataBinding(dataSet1, "Employees");
		}

		private void button1_Click(object sender, System.EventArgs e)
		{
			da.Update(dataSet1, "Employees");
		}
	}
}