C#中的ODBC、OLEDB连接

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)
        {
            Console.WriteLine("##################################ODBC连接1#############################");

            using (OdbcConnection conn = new OdbcConnection("driver={SQL Server};SERVER=127.0.0.1;UID=sa;PWD=Abc123123;DATABASE=booking"))
            {
                conn.Open();
                OdbcCommand cmd = conn.CreateCommand();
                cmd.CommandText = "select  * from TEST";
                using (OdbcDataReader reader = cmd.ExecuteReader())
                {
                    Console.WriteLine("字段数:\t{0}", reader.FieldCount);
                    Console.WriteLine("==============数据内容===========");
                    while (reader.Read())
                    {
                        Console.WriteLine("ID: {0}\tTitle: {1}", reader.GetInt32(0).ToString(), reader.GetString(1));
                    }
                }
            }
            Console.WriteLine("################################ODBC连接2###############################");

            string conString = "Dsn=ggyy1;" + "Uid=sa;" + "Pwd=Abc123123;";//Dsn表示在ODBC创建的用户数据源名

            OdbcConnection con = new OdbcConnection(conString);
            string sql = "select * from TEST"; //stuinfo为用户数据源绑定的数据库中的一个表

            con.Open();
            OdbcCommand com = new OdbcCommand(sql, con);
            using (OdbcDataReader reader = com.ExecuteReader())
            {
                Console.WriteLine("字段数:\t{0}", reader.FieldCount);
                Console.WriteLine("==============数据内容===========");
                while (reader.Read())
                {
                    Console.WriteLine("ID: {0}\tTitle: {1}", reader.GetInt32(0).ToString(), reader.GetString(1));
                }
            }
            Console.WriteLine();

            Console.WriteLine("##################################OLEDB连接#############################");

            string conString1 = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=D:\test.mdb"; //连接Access数据库
            string sql1 = "select count(*) from TEST";
            OleDbConnection con1 = new OleDbConnection(conString1);
            con1.Open();
            OleDbCommand com1 = new OleDbCommand(sql1, con1);
            int i = Convert.ToInt32(com1.ExecuteScalar());
            Console.WriteLine(i);
            Console.Read();
        }
    }
}