private void findPartnersMenuItem_Click(object sender, EventArgs e)
{
searchTextBox.Clear();
clearSearchResults();
resultsTree = mainTree.FindTradePartners(selectedCountry);
searchBoxLabel.Text = "Displaying all Trade Partners for " + selectedCountry.Name + ": " + resultsTree.Count();
countryList.DataSource = resultsTree.GetCountries();
countryList.DisplayMember = "name";
backButton.Enabled = true;
}
public CountryTree FindTradePartners(Country searchTerm)
{
CountryTree tradePartners = new CountryTree();
foreach (string partner in searchTerm.MainTradePartners)
{
foreach (Country country in GetCountries())
{
if (country.Name.Equals(partner))
{
tradePartners.InsertItem(country);
}
else if (country.MainTradePartners.Contains(searchTerm.Name) && !tradePartners.Contains(country))
{
tradePartners.InsertItem(country);
}
}
}
return(tradePartners);
}