private void CheckRemember(Window p)
        {
            if (!File.Exists("Pass.txt"))
            {
                FileStream fs;
                fs = new FileStream("Pass.txt", FileMode.Create);
                StreamWriter sWriter = new StreamWriter(fs, Encoding.UTF8);

                sWriter.WriteLine("Hello World!");
                sWriter.Flush();
                fs.Close();
            }

            string[] lines = File.ReadAllLines("Pass.txt");
            if (lines[lines.Length - 1] == "1")
            {
                Tendangnhap     = MyStaticMethods.Base64Decode(lines[lines.Length - 3]);
                Matkhau         = MyStaticMethods.Base64Decode(lines[lines.Length - 2]);
                CheckedRemember = true;
            }

            foreach (PasswordBox pb in MyStaticMethods.FindVisualChildren <PasswordBox>(p))
            {
                if (pb.Name == "pb_cr")
                {
                    pb.Password = Matkhau;
                }
            }
        }