public override string ToString()
{
string str = "";
ProductsWithPrice
.Select(keyValue => keyValue.Key).ToList()
.ForEach(product => str += $"{product.Quantity}x {product.ToString()}, ");
return(str.ToString());
}
public XElement ToXml() =>
new XElement("procurement",
new XElement("recieveDate", RecieveDate),
new XElement("paymentDate", PaymentDate),
new XElement("isRecieved", IsRecieved),
new XElement("products",
ProductsWithPrice.Select(product => {
XElement xElement = product.Key.ToXml();
xElement.Add(new XAttribute("price", product.Value));
return(xElement);
})));