private void ClearFile() { Console.WriteLine("Are you sure, you want to clear content of this file? [Y/N]"); bool stop = false; while (!stop) { var result = Console.ReadLine(); switch (result) { case "Y": Console.WriteLine("Erasing content of file..."); _balance.ClearFile(); Console.WriteLine(" succeded"); stop = true; break; case "N": stop = true; Console.WriteLine("Ok."); break; default: Console.WriteLine("I need clear answear. Yes or No"); break; } } }