private void button1_Click(object sender, EventArgs e) { if (textBox1.Text == "") { MessageBox.Show("Введите стоимость армий.", "Error.", MessageBoxButtons.OK); return; } BattleField Battle = BattleField.getBat(); groupBox2.Enabled = true; Battle.CreateArmy(Convert.ToInt16(textBox1.Text)); Battle.AddObserverF(OF); Battle.CreateCom(UnDo, ReDo); Battle.ShowArmy(ArmyA, ArmyB); Start.Enabled = true; OneStep.Enabled = true; }