Question

求asp。net连接数据库的最最简单的例子

要求必须很简单，源文件最好不要超过 50k，希望能用 连接数据库最典型的基本方法。
网上的源代码网站里的文件都太大了，动辄几M，不适合初学者。谁有留联系方式 或发我邮箱里 yaofei720@qq.com 谢谢了。
这个没有dadaset这些东西呀

Answer 1

using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.Data.OleDb;
using System.Web;

namespace Dal
{
public class Db
{
static OleDbConnection conn = null;

public Db()
{
if (conn == null) {
conn = new OleDbConnection();
conn.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + HttpContext.Current.Server.MapPath("数据库");
}

}
public OleDbConnection connOpen()
{
conn = new OleDbConnection();
conn.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + HttpContext.Current.Server.MapPath("数据库");
conn.Open();
return conn;

}
public void connClose()
{
if (conn != null && conn.State == ConnectionState.Open) {
conn.Dispose();
conn.Close();
}
}
}
}

Answer 2

string MyConn = "Initial Catalog=Northwind;Data Source="您服务器名称";User ID=账没袜户名 Password=密码";//定义数据库连接参数
SqlConnection MyConnection = new SqlConnection();//枣察厅定义一个数据连接实例
MyConnection.ConnectionString = MyConn;
try
{
MyConnection.Open();
Response.Write("连接数据库成功!"凳隐);
}
catch (Exception e)
{
Response.Write(e.Message);
}
finally
{
MyConnection.Close();
}

Answer 3

string MyConn = "Initial Catalog=Northwind;Data Source