ADO Net C# Tutorial

using System;
using System.Data.OleDb;
    class Program
    {
        static void Main(string[] args)
        {
            string oledbConnectString = "Provider=SQLOLEDB;Data Source=(local);" +
                "Initial Catalog=AdventureWorks;Integrated Security=SSPI";
            string sqlSelect = "SELECT TOP 5 Title, FirstName, LastName FROM Person.Contact";
            using (OleDbConnection connection =new OleDbConnection(oledbConnectString))
            {
                OleDbCommand command = new OleDbCommand(sqlSelect, connection);
                connection.Open(  );
                OleDbDataReader reader = command.ExecuteReader(  );
                while (reader.Read(  ))
                    Console.WriteLine("{0} {1}", reader[0], reader[1]);
            }
        }
    }