// below is the method that is used when user click the save button, the if loop calls the ISValidData method that calls the IsPresent method from the validator class
// to check to see if data entered is valid and if valid new code, description and price are saved.
private void btnSave_Click(object sender, System.EventArgs e)
{
if (IsValidData())
{
sale = new Sale(txtCode.Text,txtDescription.Text, Convert.ToDecimal(txtPrice.Text));
this.Close();
}
}
public static List<Sale> GetSales()
{
// create the list
List<Sale> sales = new List<Sale>();
// 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 Sale node
if (xmlIn.ReadToDescendant("Sale"))
{
// create one Sale object for each Sale node
do
{
Sale sale = new Sale();
xmlIn.ReadStartElement("Sale");
sale.Code =
xmlIn.ReadElementContentAsString();
sale.Description =
xmlIn.ReadElementContentAsString();
sale.Price =
xmlIn.ReadElementContentAsDecimal();
sales.Add(sale);
}
while (xmlIn.ReadToNextSibling("Sale"));
}
// close the XmlReader object
xmlIn.Close();
return sales;
}
