ADO Net C# Tutorial

using System;
using System.Data.SqlClient;
public class GetTableList
{
    public static void Main() 
    {
        string connectionString = "Data Source=localhost;Initial Catalog=Northwind;Integrated Security=SSPI";
        string SQL = "SELECT TABLE_TYPE, TABLE_NAME FROM INFORMATION_SCHEMA.TABLES";
        SqlConnection con = new SqlConnection(connectionString);
        SqlCommand cmd = new SqlCommand(SQL, con);
        SqlDataReader r;
        con.Open();
        r = cmd.ExecuteReader();
        while (r.Read()){
           Console.WriteLine(r[0] + ": " + r[1]);
        }
        con.Close();
    }
}