ADO Net C# Tutorial

using System;
using System.Data;
using System.Data.OleDb;
    class ConnectionOleDb
    {
        static void Main()
        {
            OleDbConnection conn = new OleDbConnection(@"provider = sqloledb;data source = .\sqlexpress;integrated security = sspi;");
            try
            {
                conn.Open();
                Console.WriteLine("\tConnection String: {0}",conn.ConnectionString);
                Console.WriteLine("\tDatabase: {0}",conn.Database);
                Console.WriteLine("\tDataSource: {0}",conn.DataSource);
                Console.WriteLine("\tServerVersion: {0}",conn.ServerVersion);
                Console.WriteLine("\tState: {0}",conn.State);
            }
            catch (OleDbException e)
            {
                Console.WriteLine("Error: " + e);
            }
            finally
            {
                conn.Close();
                Console.WriteLine("Connection closed.");
            } 
        }
    }