//read XML file for patent info
public static SortedList<int, Patent> GetPatents()
{
XmlDocument doc = new XmlDocument();
//if file doesn't exist, create it
if (!File.Exists("Patents.xml"))
doc.Save("Patents.xml");
SortedList<int, Patent> patents = new SortedList<int, Patent>();
XmlReaderSettings readerSettings = new XmlReaderSettings();
readerSettings.IgnoreWhitespace = true;
readerSettings.IgnoreComments = true;
XmlReader readXml = null;
try
{
readXml = XmlReader.Create(path, readerSettings);
if (readXml.ReadToDescendant("Patent")) //read to first Patent node
{
do
{
Patent patent = new Patent();
patent.Number = Convert.ToInt32(readXml["Number"]);
readXml.ReadStartElement("Patent");
patent.AppNumber = readXml.ReadElementContentAsString();
patent.Description = readXml.ReadElementContentAsString();
patent.FilingDate = DateTime.Parse(readXml.ReadElementContentAsString());
patent.Inventor = readXml.ReadElementContentAsString();
patent.Inventor2 = readXml.ReadElementContentAsString();
int key = patent.Number; //assign key to value
patents.Add(key, patent); //add key-value pair to list
}
while (readXml.ReadToNextSibling("Patent"));
}
}
catch (XmlException ex)
{
MessageBox.Show(ex.Message, "Xml Error");
}
catch (IOException ex)
{
MessageBox.Show(ex.Message, "IO Exception");
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Exception Occurred");
}
finally
{
if (readXml != null)
readXml.Close();
}
return patents;
}
private void btnSave_Click(object sender, EventArgs e)
{
if (IsValidData())
{
updatePatent = new Patent(
Convert.ToInt32(txtNumber.Text),
txtAppNumber.Text,
txtDescription.Text,
DateTime.Parse(txtFilingDate.Text),
txtInventor.Text,
txtInventor2.Text);
this.Close();
}
}
//Displays search result in listview
private void AddSearchPatentToListView(Patent p)
{
ListViewItem item = new ListViewItem();
item.Text = p.Number.ToString();
item.SubItems.Add(p.AppNumber);
item.SubItems.Add(p.Description);
item.SubItems.Add(p.FilingDate.ToString("yyyy-MM-dd"));
item.SubItems.Add(p.Inventor);
if (p.Inventor2 != "")
item.SubItems.Add(p.Inventor2);
else
item.SubItems.Add("N/A");
lvPatents.Items.Add(item);
}