void OnCounterpartyChanged(Counterparty newCounterparty)
{
if (newCounterparty != null)
{
SelectedCounterparty = newCounterparty;
CounterpartyChangeEvent evt = eventAggregator.GetEvent <CounterpartyChangeEvent>();
evt.Publish(newCounterparty);
}
}
public CounterpartyViewModel(
ICounterpartyService dataService,
IEventAggregator eventAggregator)
{
this.dataService = dataService;
this.eventAggregator = eventAggregator;
this.counterparties = new ObservableCollection <Counterparty>(dataService.FindAll());
this.addCommand = new DelegateCommand(
() =>
{
NewCounterparty = Counterparty.CreateNewCounterparty();
NewCounterparty.PropertyChanged += (s, e) =>
{
saveCommand.RaiseCanExecuteChanged();
};
// when first displayed the new counterparty will be invalid so we should disable the Save button
saveCommand.RaiseCanExecuteChanged();
}
);
this.saveCommand = new DelegateCommand(
() =>
{
dataService.Add(NewCounterparty);
this.Counterparties = new ObservableCollection <Counterparty>(dataService.FindAll());
RaisePropertyChanged("Counterparties");
// Don't use the NewCounterparty object as it won't be in the Counterparties list
var newCounterparty = this.Counterparties.Where(c => c.Id == NewCounterparty.Id).Single();
OnCounterpartyChanged(newCounterparty);
},
() =>
{
return((NewCounterparty == null) ? false : NewCounterparty.IsValid);
}
);
if (counterparties.Count() > 0)
{
SelectedCounterparty = counterparties.First();
CounterpartyChangeEvent evt = eventAggregator.GetEvent <CounterpartyChangeEvent>();
evt.Publish(SelectedCounterparty);
}
}