public ExpenseViewModel(Expense entry)
     : this()
 {
     Entry = entry;
     Contractor = entry.Contractor;
     if (!entry.EconomicEvent.IsInDictionary)
         EconomicEventDescription = entry.EconomicEvent.Description;
     if (!entry.Comment.IsInDictionary)
         CommentText = entry.Comment.Text;
     ButtonContent = "Edytuj";
     Title = $"Edycja wpisu {entry.EvidenceNumber}";
     ButtonCommand = new RelayCommand(EditEntry);
 }
 public ContractorViewModel()
 {
     ButtonContent = "Dodaj";
     ButtonCommand = new RelayCommand(AddContractor);
 }
 public ContractorViewModel(Contractor contractor)
 {
     Contractor = contractor;
     ButtonContent = "Edytuj";
     ButtonCommand = new RelayCommand(EditContractor);
 }
 public EntryViewModel()
 {
     ButtonCommand = new RelayCommand(AddEntry);
     ButtonContent = "Dodaj";
     Title = "Dodawanie nowego wpisu";
 }