private void button1_Click(object sender, EventArgs e) { MainForm FrmGame = null; if (radioButton1.Checked) { FrmGame = new MainForm(10, 15); } if (radioButton2.Checked) { FrmGame = new MainForm(15, 25); } if (radioButton3.Checked) { FrmGame = new MainForm(20, 50); } this.Hide(); FrmGame.ShowDialog(); Close(); }