5th Gen Wild Pokemon Hack-Check

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace RNGPID
{
    public partial class checkPoke : Form
    {
        private static bool open;
        private readonly char[] accepted = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9' };

        public checkPoke()
        {
            InitializeComponent();
            open = true;
            hacktidText.MaxLength = 5;
            hacksidText.MaxLength = 5;
            checkPIDText.MaxLength = 10;
        }

        public static bool isOpen()
        {
            return open;
        }

        private void hackCheck_KeyPress(object sender, KeyPressEventArgs e)//stop all keystrokes but the allowed list for tid/sid/pid
        {
            if (char.IsControl(e.KeyChar))
                return;
            for (int i = 0; i < accepted.Length; i++)
            {
                if (e.KeyChar == accepted[i])
                {
                    return;
                }
            }
            e.Handled = true;
        }

        private void checkPoke_Load(object sender, EventArgs e)
        {

        }

        private void hackRun_Click(object sender, EventArgs e)
        {
            uint pid, low, abil, tid, sid, pidTest;
            byte xorTest;

            uint.TryParse(hacktidText.Text, System.Globalization.NumberStyles.Number, null, out tid);
            uint.TryParse(hacksidText.Text, System.Globalization.NumberStyles.Number, null, out sid);
            uint.TryParse(checkPIDText.Text, System.Globalization.NumberStyles.Number, null, out pid);

            abil = (pid >> 0x10) & 1;
            abilityText.Text = abil.ToString();


            xorTest = (byte)((tid & 1) ^ (sid & 1) ^ (pid >> 31) ^ (pid & 1));

            if (xorTest == 1)
            {
                pidText.Text = "Illegal";
            }
            else
            {
                pidText.Text = "Legal";
            }


            low = pid & 0xFFFF;

            pidTest = (tid ^ sid) ^ low;

            if ((pidTest & 1) == 1)
               {
                    orTest.Text = "Yes";
               }
            else
               {
                    orTest.Text = "No";
               }
        }

        private void checkPoke_FormClosed(object sender, FormClosedEventArgs e)
        {
            open = false;
        }

    }
}