private void button2_Click(object sender, EventArgs e) { Meal m1 = new Meal(); Store s2 = new Store(); string sql = "select * from menu where 1=1"; List <object []> a = Utiles.execQuery(sql); m1.mealId = (a.Count() + 1).ToString(); m1.mealName = textBox2.Text; m1.mealType = comboBox1.Text; m1.price = textBox3.Text; StoreCtrl.saveMeal(s2, m1); button1_Click(null, null); textBox2.Clear(); comboBox1.Text = ""; textBox3.Clear(); }