public IdentifyUserForm()
{
InitializeComponent();
Product product1 = new Product("Computer", 6199, 20);
Product product2 = new Product("Phone", 4688, 30);
productList.Add(product1);
productList.Add(product2);
}
private void addCompletedButton_Click(object sender, EventArgs e)
{
Product product;
String productName;
float productPrice;
int productStock;
if (newProductNameTextBox.Text == "" || newProductPriceTextBox.Text == "" || newProductStockTextBox.Text == "")
MessageBox.Show("You should input complete product information!");
else
{
productName = newProductNameTextBox.Text;
if (isPositiveNumber(newProductPriceTextBox.Text) == true) //对用户输入的产品价格数据的合法性进行验证
{
productPrice = Convert.ToSingle(newProductPriceTextBox.Text);
if (isPositiveInteger(newProductStockTextBox.Text) == true) //对用户输入的产品库存数据的合法性进行验证
{
productStock = Convert.ToInt32(newProductStockTextBox.Text);
product = new Product(productName, productPrice, productStock);
productList.Add(product);
}
else
MessageBox.Show("The stock is invalid !\r\t The stock must be positive interger!\r\t Please input again!");
}
else
MessageBox.Show("The productPrice is invalid!\r\tThe price can't be negative number or letters!The price should only have one point!!\r\tPlease input again!");
}
this.Close();
}