Affecto.Database.Migrator.DatabaseMigrationApplication.GetConnectionStringName C# (CSharp) Method

        private static string GetConnectionStringName()
        {
            Console.WriteLine("Available connection strings: ");

            var connectionStringNames = new List<string>();

            for (var i = 0; i < ConfigurationManager.ConnectionStrings.Count; i++)
            {
                var connectionStringName = ConfigurationManager.ConnectionStrings[i].Name;

                if (!connectionStringName.Equals("LocalSqlServer"))
                {
                    connectionStringNames.Add(connectionStringName);
                }
            }

            foreach (var name in connectionStringNames)
            {
                Console.WriteLine(name);
            }

            string givenConnectionString = null;

            while (!connectionStringNames.Contains(givenConnectionString))
            {
                Console.Write("Enter one of the available connection strings: ");

                givenConnectionString = Console.ReadLine();
            }

            return givenConnectionString;
        }