private void add()
{
Product prod = new Product();
prod.Name = nameText.Text;
prod.Type = typeText.Text;
prod.Quantity_box = Convert.ToInt32(quantityNumericUpDown.Value);
prod.Weight = decimal.Parse(weightText.Text);
prod.Box_id = Int32.Parse(boxIdText.Text);
InsertSQL prodHnd = new InsertSQL();
int addrecord = prodHnd.addNewProduct(prod);
MessageBox.Show("Your record is added");
this.Close();
}