static class Ulitityclass
    {
        public static int ReadFromFile(ref playersignup[] players)
        {
            int size = 0;
            Stream sr;
            try
            {
                sr = File.OpenRead("PlayerDetails.bin");
                BinaryFormatter bf = new BinaryFormatter();
                try
                {
                    while (sr.Position < sr.Length)
                    {
                        players[size] = (playersignup)bf.Deserialize(sr);
                        size++;
                    }
                    sr.Close();
                }
                catch (SerializationException e)
                {
                    sr.Close();
                    return size;
                }
                return size;
            }
            catch (IOException e)
            {
            }
            return size;
        }

        public static void DisplayUsers()
        {
            Stream sr;
            playersignup player;
            try
            {
                sr = File.OpenRead("players.txt");
                BinaryFormatter bf = new BinaryFormatter();
                try
                {
                    while (sr.Position < sr.Length)
                    {
                        player = (playersignup)bf.Deserialize(sr);
                        //
                    }
                }
                catch (SerializationException e)
                {

                }
                sr.Close();
                sr.Dispose();
            }
            catch (IOException e)
            {
                //
            }
        }
        public static void DisplayusersBinary()
        {
            playersignup player;
            Stream sr;
            try
            {
                sr = File.OpenRead("PlayerDetails.bin");
                BinaryFormatter bf = new BinaryFormatter();
                try
                {
                    while (sr.Position < sr.Length)
                    {
                        player = (playersignup)bf.Deserialize(sr);
                    }
                }
                catch (SerializationException e)
                {

                }
                sr.Close();
                sr.Dispose();
            }
            catch (IOException e)
            {

            }

        }
        public static void WriteToFile(playersignup[] players, int size)
        {
            Stream sw;
            BinaryFormatter bf = new BinaryFormatter();
            try
            {
                sw = File.Open("PlayerDetails.bin", FileMode.Create);
                bf.Serialize(sw, players[0]);
                sw.Close();

                //open as append and write rest of array
                sw = File.Open("PlayerDetails.bin", FileMode.Append);
                //serialialize new player
                for (int x = 1; x < size; x++)
                {
                    bf.Serialize(sw, players[x]);

                }
                sw.Close();


            }
            catch (IOException e)
            {
                //(e.Message);
            }
        }



        public static bool UserExists(playersignup[] players, string userna,string passwo,string ema)
        {
            foreach (playersignup player in players)
            {
                //if user is registered, the method returns true
                if (player != null)
                {
                    if ((player.Username == userna)&&(player.Password==passwo)&&(player.Email==ema))
                    {
                        return true;
                    }
                }
            }
            return false;
        }

    }
}