using System;
using System.Data;
using System.Data.SqlClient;
using System.Collections.Generic;
using System.Text;
class Program
{
static void Main(string[] args)
{
SqlConnection thisConnection = new
SqlConnection(
@"Data Source=.\SQLEXPRESS;" +
@"AttachDbFilename='NORTHWND.MDF';" +
@"Integrated Security=True;Connect Timeout=30;User Instance=true");
thisConnection.Open();
SqlCommand thisCommand = thisConnection.CreateCommand();
thisCommand.CommandText = "SELECT COUNT(*) FROM Customers";
Object countResult = thisCommand.ExecuteScalar();
Console.WriteLine("Count of Customers = {0}", countResult);
thisConnection.Close();
}
}