C# : ADO.NET 读取 Access mdb

using System;
using System.Data;
using System.Data.OleDb;
using System.IO;

namespace mdb_ADO
{
class Program
{
static void Main(string[] args)
{
string connStr = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=Northwind.mdb";
OleDbConnection Conn = new OleDbConnection(connStr);
Conn.Open();
// get records from the table
string sql = "Select * from [产品]";

// create a text writer to the new file
string wfile = "产品.txt";
StreamWriter writer = new StreamWriter(wfile, false);

// create the data set command object
// and the DataReader
OleDbCommand cmd = new OleDbCommand(sql, Conn);
OleDbDataReader DR = cmd.ExecuteReader();
while (DR.Read())
{
writer.WriteLine(DR["产品名称"].ToString() +"\t"+ DR["供应商"].ToString());
}
DR.Close();
Conn.Close();
writer.Close();
}
}
}