private void populateList()
{
countryData.Clear();
filteredTree = new CountryTree();
CountryTree tradePartnerTree = new CountryTree();
if (tradePartnerFiltering)
unfilteredTree.TradePartnersOf(unfilteredTree.GetItem(
unfilteredTree.GetCountryByName(partnersOf.Text)), ref tradePartnerTree);
else
tradePartnerTree = unfilteredTree;
if (keywordFiltering)
tradePartnerTree.SearchByKeyword(filter.Text.Trim().ToLower(), ref filteredTree);
else
filteredTree = tradePartnerTree;
filteredTree.Reset();
foreach (Country c in filteredTree)
if (c != null)
countryData.Rows.Add(c.Name, c.GdpGrowth, c.Inflation,
c.TradeBalance, c.HdiRanking, c.GetTradePartnersAsString());
countryGrid.Update();
}
public void init()
{
LinkedList <string> partners = null;
CT = new CountryTree();
for (int i = 0; i < 15; i++)
{
Country country = new Country("demoCountry" + i, 0, 0, 0, 0, partners);
CT.InsertItem(country);
}
}
//<<ADDED ERROR HANDLING (TRY/CATCH) FOR SUMMATIVE>>
public static bool ParseCountriesIntoTree(string filePath, ref CountryTree tree)
{
try
{
String[] lines = new string[LINE_MAX];
lines = File.ReadAllLines(filePath);
foreach (string line in lines)
{
if (line.StartsWith(COUNTRY)) //ignore header
{
if (line.Split(',').Length != 6)
{
return false;
}
}
else
{
LinkedList<string> partnerNames = new LinkedList<string>();
string[] columns = line.Split(',');
string[] partners = columns[PARTNERS_INDEX].Split(';', '[', ']');
foreach (string p in partners)
{
if (p.Length > 1)
{
partnerNames.AddLast(p);
}
}
tree.InsertItem(new Country(columns[NAME_INDEX], Double.Parse(columns[GDP_INDEX]),
Double.Parse(columns[INFLATION_INDEX]), Double.Parse(columns[TRADE_INDEX]),
int.Parse(columns[HDI_INDEX]), partnerNames));
}
}
return true;
}
catch (Exception e)
{
Console.WriteLine(e.StackTrace);
return false;
}
}
private void MainView_Load(object sender, EventArgs e)
{
countryData = new DataTable();
countryData.Columns.Add(Country.NAME, typeof(string));
countryData.Columns.Add(Country.GDP_GROWTH, typeof(double));
countryData.Columns.Add(Country.INFLATION, typeof(double));
countryData.Columns.Add(Country.TRADE_BALANCE, typeof(double));
countryData.Columns.Add(Country.HDI_RANKING, typeof(int));
countryData.Columns.Add(Country.TRADE_PARTNERS, typeof(string));
countryGrid.DataSource = countryData;
countryGrid.Sort(countryGrid.Columns[0], ListSortDirection.Ascending);
partnersOptions = new BindingList<string>();
partnersOf.DataSource = partnersOptions;
unfilteredTree = new CountryTree();
showTreeInfo();
}
public static bool WriteCountryFile(string filePath, CountryTree tree)
{
StreamWriter file = null;
try
{
file = new StreamWriter(filePath, false);
file.WriteLine(HEADER);
tree.Reset();
foreach (Country c in tree)
{
StringBuilder partnersSb = new StringBuilder();
partnersSb.Append("[");
foreach (string p in c.TradePartners)
{
partnersSb.Append(p + ";");
}
partnersSb.Append("]");
file.WriteLine(String.Format(STRING_FORMAT,
c.Name,
c.GdpGrowth,
c.Inflation,
c.TradeBalance,
c.HdiRanking,
partnersSb.ToString()));
}
}
catch (Exception e)
{
Console.WriteLine(e.StackTrace);
return false;
}
finally
{
if (file != null)
file.Close();
}
return true;
}
//File opening <<ADDED FOR SUMMATIVE>>
private void openFile_Click(object sender, EventArgs e)
{
OpenFileDialog dialog = new OpenFileDialog();
dialog.Filter = "Country File|*.csv";
DialogResult result = dialog.ShowDialog();
if (result == DialogResult.OK)
{
unfilteredTree = new CountryTree();
bool read = CsvParser.ParseCountriesIntoTree(dialog.FileName, ref unfilteredTree);
if (read)
{
dataStatus.Text = "Data imported from '" + dialog.FileName + "'.";
refreshAll();
}
else
{
MessageBox.Show("An error occured while reading the file. Check that the file is formatted correctly and not corrupted.");
}
}
}
