[RELEASE][C++] NFA Viewer

private void button1_Click(object sender, EventArgs e)
        {
            mapPanel.Invalidate();
            OpenFileDialog ofd = new OpenFileDialog();
            ofd.FileName = "*.nfa"; ofd.Filter = " (*.nfa)|*.nfa";
            if (ofd.ShowDialog() == DialogResult.OK)
            {
                FileStream fileStream = File.Open(ofd.FileName, FileMode.Open, FileAccess.Read, FileShare.Read);
                BinaryReader br = new BinaryReader((Stream)fileStream, Encoding.ASCII);
                Pol = br.ReadInt32();
                for (int index = 1; index <= Pol; i++)
                {
                    int x;
                    int y;
                    Point = br.ReadInt32();
                    Point[] tmpPoint = new Point[Point];
                    for (int pnt = 0; pnt <= Point - 1; pnt++)
                    {
                        x = br.ReadInt32();
                        y = br.ReadInt32();
                        tmpPoint[pnt] = new Point((int)x / 8, (int)y / 8);
                    }
                    Graphics G = mapPanel.CreateGraphics();
                    G.DrawPolygon(Pens.Black, tmpPoint); 
                }
                br.Close();
            }  
        }