DataGrid实例（简单易懂，无复杂功能，适合初学者）

使ACCESS数据库，适合初学者，修改连接、查询语句后可直接运行，代码中有注明。

填充DataSet的步骤
１、使用数据库连接字符串创建数据库连接对象
２、用SQL查询语句和数据库连接对象创建数据库适配器dataAdapter
３、使用DataAdapter的Fill 方法填充DataSet

using System;
using System.Windows.Forms;
using System.Data;
using System.Data.SqlClient;
using System.Data.OleDb;
//Professional C# 2nd的DATAGRID实例
/**//// <summary>
/// This class provides an example of creating and using a data grid.
/// </summary>
public class DisplayTabularData : System.Windows.Forms.Form
{
private System.Windows.Forms.Button retrieveButton;
private System.Windows.Forms.DataGrid dataGrid;

/**//// <summary>
/// Construct the window.
/// </summary>
/// <remarks>
/// This method constructs the window by creating both the data grid and the button.
/// </remarks>
public DisplayTabularData()
{
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(464, 253);
this.Text = "01_DisplayTabularData";
this.dataGrid = new System.Windows.Forms.DataGrid();
dataGrid.BeginInit();
dataGrid.Location = new System.Drawing.Point(8, 8);
dataGrid.Size = new System.Drawing.Size(448, 208);
dataGrid.TabIndex = 0;
dataGrid.Anchor = AnchorStyles.Bottom | AnchorStyles.Top | AnchorStyles.Left | AnchorStyles.Right;
this.Controls.Add(this.dataGrid);
dataGrid.EndInit();
this.retrieveButton = new System.Windows.Forms.Button();
retrieveButton.Location = new System.Drawing.Point(384, 224);
retrieveButton.Size = new System.Drawing.Size(75, 23);
retrieveButton.TabIndex = 1;
retrieveButton.Anchor = AnchorStyles.Bottom | AnchorStyles.Right;
retrieveButton.Text = "Retrieve";
retrieveButton.Click = new System.EventHandler(this.retrieveButton_Click);
this.Controls.Add(this.retrieveButton);
}

/**//// <summary>
/// Retrieve the data
/// </summary>
/// <param name="sender"> </param>
/// <param name="e"> </param>
protected void retrieveButton_Click(object sender, System.EventArgs e)
{
retrieveButton.Enabled = false;

string source = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\Documents and Settings\Manio\My Documents\PrintManager\program\PrintManageV1\DataBase\PrintDB.mdb";
string select = "SELECT * FROM MainInfo";

/**/////////////////////////////////
//填充DataSet的步骤
//１、使用数据库连接字符串创建数据库连接对象
// ２、用SQL查询语句和数据库连接对象创建数据库适配器dataAdapter
// ３、使用DataAdapter的Fill 方法填充DataSet

OleDbConnection OleCon = new OleDbConnection(source);

OleDbDataAdapter da = new OleDbDataAdapter(select,OleCon);

DataSet ds = new DataSet();

da.Fill(ds, "MainInfo");

dataGrid.SetDataBinding(ds, "MainInfo"); //DataGrid的数据绑定，使用DataSet 和　数据库的表名
}

/**//// <summary>
/// Display the application window
/// </summary>
static void Main()
{
Application.Run(new DisplayTabularData());
}
}