static void Main()
 {
     file.WriteLine("name,address,city,phone");
     var de = new DentistExtractor();
     var cities = de.ExtractState("WA");
     for (int i = 0; i < cities.Count; i++)
     {
         System.Console.WriteLine(cities[i]);
         de.ExtractCity("WA", cities[i]);
     }
     file.Close();
     System.Console.ReadKey();
 }
        static void Main()
        {
            file.WriteLine("name,address,city,phone");
            var de     = new DentistExtractor();
            var cities = de.ExtractState("WA");

            for (int i = 0; i < cities.Count; i++)
            {
                System.Console.WriteLine(cities[i]);
                de.ExtractCity("WA", cities[i]);
            }
            file.Close();
            System.Console.ReadKey();
        }