private void button1_Click(object sender, EventArgs e) { if (Convert.ToInt32(textBox1.Text) <= 4 && Convert.ToInt32(textBox1.Text) <= 4 && comboBox1.SelectedItem != null) { _Toy.coordinate_X = Convert.ToInt32(textBox1.Text); _Toy.coordinate_Y = Convert.ToInt32(textBox2.Text); _Toy.Direction = comboBox1.SelectedItem.ToString(); _Toy.TargetCoordinateX = _Toy.GenerateRandomCoordinate(0, 4); _Toy.TargetCoordinateY = _Toy.GenerateRandomCoordinate(0, 4); _Toy.Place(); Paint += Draw2DArray; groupBoxEnters.Visible = false; groupBoxControls.Visible = true; labelDirectionInfo.Text = "Direction: " + _Toy.Direction; _Toy._Start = DateTime.Now; } else { MessageBox.Show("Error! Wrong enters!"); } }