private void backBtn_Click(object sender, EventArgs e)
        {
            this.Hide();
            LevelManager levelmngr = new LevelManager();

            levelmngr.ShowDialog();
        }
 private void backBtn_Click(object sender, EventArgs e)
 {
     this.Hide();
     LevelManager levelmngr = new LevelManager();
     levelmngr.ShowDialog();
 }