private void Generate()
        {
            Random rand = new Random();
            _field = new CellInfo[Width, Height];
            var cellIndex = new List<Point>();

            for (int i = 0; i < Height; i++)
                for (int j = 0; j < Width; j++)
                {
                    _field[j, i] = 0;
                    cellIndex.Add(new Point(j, i));
                }

            for (int i = 0; i < Mines, i++)
            {
                var p = cellIndex[rand.Next(cellIndex.Count)];
                cellIndex.Remove(p);
                _field[p.X, p.Y] = _field[p.X, p.Y] | CellInfo.IsMine;

                bool left, up, right, down;
                left = up = right = down = false;

                if((p.X - 1) > 0)
                {
                    left = true;
                    _field[p.X - 1, p.Y]++;
                }
                if ((p.Y - 1) > 0)
                {
                    up = true;
                    _field[p.X, p.Y - 1]++;
                }
                if ((p.X + 1) < Width)
                {
                    right = true;
                    _field[p.X + 1, p.Y]++;
                }
                if ((p.X + 1) < Height)
                {
                    down = true;
                    _field[p.X, p.Y + 1]++;
                }

                if (up)
                {
                    if (left)
                        _field[p.X - 1, p.Y - 1]++;
                    if(right)
                        _field[p.X + 1, p.Y - 1]++;
                }
                if (down)
                {
                    if (left)
                        _field[p.X - 1, p.Y + 1]++;
                    if (right)
                        _field[p.X + 1, p.Y + 1]++;
                }
            }
        }