public Сountry(Сountry country)
{
this.name = country.name;
this.president = country.president;
this.population = country.population;
this.square = country.square;
UpdateSummaryStaticFields();
}
private ListViewItem GetListViewItemFormFlight(Сountry country)
{
return(new ListViewItem(new string[] {
country.Name,
country.President,
country.Population.ToString(),
country.Square.ToString(),
country.Density.ToString()
}));
}