//Перерисовка элементов формы
public void PaintElements()
{
var package = _gift.Package;
PackageBox.Text = package.KindofPackage;
var printer = new ListBoxWriter();
printer.Print(_gift);
var sweets = _gift.Sweets;
var sweetsList = new List <Sweetness>();
sweetsList.AddRange(sweets.Keys);
SweetnessBox.DataSource = sweetsList;
SweetnessBox.DisplayMember = "Info";
GiftWeightLabel.Text = _gift.CalcWeight().ToString();
}
