asp.net之学习第一篇(数据库操作)

<%@ Page Language="C#" ContentType="text/html" ResponseEncoding="gb2312" %>
<script language="C#" runat="server">

void Page_Load()
{
string DB_name = "dbTest.mdb";
string DB_path = Server.MapPath(DB_name);
string SQL = "SELECT [CategoryID],[CategoryName] FROM [Categories]";
string connectionString = @"Provider=Microsoft.Jet.OLEDB.4.0; Ole DB Services=-4; Data Source=" + DB_path ;
//建立OleDbConnection
System.Data.IDbConnection dbConnection = new System.Data.OleDb.OleDbConnection(connectionString);

//建立OleDbCommand
System.Data.IDbCommand dbCommand = new System.Data.OleDb.OleDbCommand();
dbCommand.CommandText = SQL;
dbCommand.Connection = dbConnection;

//建立DataSet
System.Data.DataSet dbSet = new System.Data.DataSet();

//建立OleDbDataAdapter
System.Data.IDbDataAdapter dbAdapter = new System.Data.OleDb.OleDbDataAdapter();
dbAdapter.SelectCommand = dbCommand;//选择OleDbCommand
dbAdapter.Fill(dbSet);//填充DataSet

//DataGrid控件操作
DataGrid1.DataSource = dbSet;//数据源
DataGrid1.DataBind();//压入数据
}
</script>

<form runat="server">
<asp:datagrid ID="DataGrid1" runat="server"/>
</form>