Create Connection

   
 


using System;
using System.Data;
using System.Data.Common;

class MainClass {
    public static void Main(string[] args) {
        DbProviderFactory factory = DbProviderFactories.GetFactory("System.Data.SqlClient");

        using (IDbConnection con = factory.CreateConnection()) {
            con.ConnectionString = @"Data Source = .sqlexpress;Database = Northwind; Integrated Security=SSPI";
            using (IDbCommand com = con.CreateCommand()) {
                com.CommandType = CommandType.StoredProcedure;
                com.CommandText = "Ten Most Expensive Products";
                con.Open();
                using (IDataReader reader = com.ExecuteReader()) {
                    Console.WriteLine(Environment.NewLine);
                    Console.WriteLine("Price of the Ten Most Expensive Products.");
                    while (reader.Read()) {
                        Console.WriteLine("  {0} = {1}", reader["TenMostExpensiveProducts"], reader["UnitPrice"]);
                    }
                }
            }
        }
    }
}