private void addPesticide() { Pesticide p1 = new Pesticide(); p1.Name = textBox1.Text; p1.Quantity_kg = Int32.Parse(textBox2.Text); p1.Remark = textBox3.Text; InsertSQL add = new InsertSQL(); int changerecord = add.addNewPesticide(p1); MessageBox.Show(changerecord + " Your record is added"); }