private void btnSave_Click(object sender, EventArgs e)
{
if (IsValidData())
{
try
{
// Create an instance of the Product class named product (lowercase)
// using its pramerized constructor method.
product = new Sailboat(txtCode.Text,
txtDescription.Text, Convert.ToInt32(txtNumOfSails.Text), Convert.ToDecimal(txtPrice.Text));
// Close this form
this.Close();
}
catch (Exception ex)
{
MessageBox.Show("Exception " + ex.GetType().FullName + " thrown " +
"\n" + "Message: " + ex.Message);
}
}
}
public static List <Sailboat> GetProducts()
{
// create the list
List <Sailboat> products = new List <Sailboat>();
// create the XmlReaderSettings object
XmlReaderSettings settings = new XmlReaderSettings();
settings.IgnoreWhitespace = true;
settings.IgnoreComments = true;
// create the XmlReader object
XmlReader xmlIn = XmlReader.Create(Path, settings);
// read past all nodes to the first Product node
if (xmlIn.ReadToDescendant("Product"))
{
// create one Product object for each Product node
do
{
Sailboat product = new Sailboat();
xmlIn.ReadStartElement("Product");
product.Code =
xmlIn.ReadElementContentAsString();
product.OwnerName =
xmlIn.ReadElementContentAsString();
product.NumOfSails =
xmlIn.ReadElementContentAsInt();
product.Price =
xmlIn.ReadElementContentAsDecimal();
products.Add(product);
}while (xmlIn.ReadToNextSibling("Product"));
}
// close the XmlReader object
xmlIn.Close();
return(products);
}
private void btnDelete_Click(object sender, EventArgs e)
{
// *** TODO - Determine the index of the selected product to delete
int i = lstProducts.SelectedIndex;
// *** TODO - Check that the user did select a product
if (i != -1)
{
// *** TODO - Create a product object and assign it the element
// in the sailboat list that has the index value
// identified in the first TODO of this event handler.
// NOTE: The sailboat[] element will need to be cast
// as a Product.
Sailboat product = (Sailboat)sailboat[i];
string message = "Are you sure you want to delete "
+ product.OwnerName + "?";
// *** TODO - Declare a DialogResult object named button and
// assign it the value returned from the MessageBox.Show()
// method. The MessageBox should display the value of the message
// (assigned in the previous statement) and a "Confirm Delete" caption,
// and display a Yes or a No button.
DialogResult button =
MessageBox.Show(message, "Confirm Delete",
MessageBoxButtons.YesNo);
// *** TODO - Check to see if the button variable contrains a DialogResult of Yes
if (button == DialogResult.Yes)
{
sailboat.Remove(product);
SailboatDB.SaveProducts(sailboat);
FillProductListBox();
}
}
}
private void btnAdd_Click(object sender, EventArgs e)
{
// *** TODO - Instantiate a new instance of the frmNewProducts() form.
frmNewBoat newProductForm = new frmNewBoat();
// *** TODO - Instantiate a new Product object named product and assign it
// the return value of the newProductsForm's GetNewProduct() method.
Sailboat product = newProductForm.GetNewProduct();
// *** TODO - Check to see if the pervious statement returned a product.
if (product != null)
{
// *** TODO - Use the Add method of the List<> collect to add the returned
// product to the list.
sailboat.Add(product);
// *** TODO - Execute the static SaveProducts() method of the ProductDB class,
// passing it the entire sailboat list.
SailboatDB.SaveProducts(sailboat);
// *** TODO - Call the function FillProductListBox();
FillProductListBox();
}
}
