static void Main(string[] args) { string pth = "C:\\Users\\N4TH\\Desktop\\testGF.txt"; if (false) { using (StreamWriter streamWriter = new StreamWriter(pth, true)) { streamWriter.WriteLine("test WriteLine"); } } else { OpenFile f = new OpenFile(pth); // Printer.Print(f); Console.WriteLine(string.Join(", ", "f", f.ToString())); f.Write("test data"); f.Write("test again"); throw new Exception(); // f.ensure.MoveNext(); // Console.WriteLine(f.ensure.Current); } }