使ACCESS數據庫,適合初學者,修改連接、查詢語句後可直接運行,代碼中有註明。
填充DataSet的步驟
1、使用數據庫連接字符串創建數據庫連接對象
2、用SQL查詢語句和數據庫連接對象創建數據庫適配器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實例
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/**//**//**//// <summary>
/// This class provides an example of creating and using a data grid.
/// </summary>
public class DisplayTabularData : System.Windows.Forms.Form
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...{
private System.Windows.Forms.Button retrieveButton;
private System.Windows.Forms.DataGrid dataGrid;
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/**//**//**//// <summary>
/// Construct the window.
/// </summary>
/// <remarks>
/// This method constructs the window by creating both the data grid and the button.
/// </remarks>
public DisplayTabularData()
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...{
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);
}
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/**//**//**//// <summary>
/// Retrieve the data
/// </summary>
/// <param name="sender"> </param>
/// <param name="e"> </param>
protected void retrieveButton_Click(object sender, System.EventArgs e)
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...{
retrieveButton.Enabled = false;
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string source = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:Documents and SettingsManioMy DocumentsPrintManagerprogramPrintManageV1DataBasePrintDB.mdb";
string select = "SELECT * FROM MainInfo";
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/**//**//**/////////////////////////////////
//填充DataSet的步驟
//1、使用數據庫連接字符串創建數據庫連接對象
// 2、用SQL查詢語句和數據庫連接對象創建數據庫適配器dataAdapter
// 3、使用DataAdapter的Fill 方法填充DataSet
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OleDbConnection OleCon = new OleDbConnection(source);
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OleDbDataAdapter da = new OleDbDataAdapter(select,OleCon);
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DataSet ds = new DataSet();
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da.Fill(ds, "MainInfo");
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dataGrid.SetDataBinding(ds, "MainInfo"); //DataGrid的數據綁定,使用DataSet 和 數據庫的表名
}
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/**//**//**//// <summary>
/// Display the application window
/// </summary>
static void Main()
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...{
Application.Run(new DisplayTabularData());
}
}