using System;using System.Collections.Generic;using System.Text;using System.Data.Odbc;using System.Data.OleDb;namespace ODBCtest{  class Program  {    static void Main(string[] args)    {      //ODBC連接      string conString = "DSN=tian"; //tian表示ODBC的用戶數據源名      string sql = "select count(*) from stuinfo"; //stuinfo為用戶數據源綁定的數據庫中的一個表      OdbcConnection con = new OdbcConnection(conString);      con.Open();      OdbcCommand com = new OdbcCommand(sql, con);      int i = Convert.ToInt32(com.ExecuteScalar());      Console.WriteLine(i);      //OLEDB連接      string conString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=D:/tian.mdb"; //連接Access數據庫      string sql = "select count(*) from stuinfo";      OleDbConnection con = new OleDbConnection(conString);      con.Open();      OleDbCommand com = new OleDbCommand(sql, con);      int i = Convert.ToInt32(com.ExecuteScalar());      Console.WriteLine(i);    }  }}