public ShowAllCardsViewModel()
{
//ClickCommand = new Command(arg => ClickMethod());
SaleCard = new SaleCardModel { Discount=15, Surname="", Name="", Number=0, Balance=0};
SaleCards = XMLParser.GetAllSaleCards();
xmlp = new XMLParser();
}
public ShowBalanceViewModel()
{
ClickCommand = new Command(arg => findBalance());
SaleCard = new SaleCardModel { Discount=15, Name="", Surname="",Number=0, Balance=0 };
SaleCards = XMLParser.GetAllSaleCards();
xmlp = new XMLParser();
}