public async Task RefreshAsync()
{
await Task.Run(() =>
{
IsBusy = true;
try
{
var persons = this.personService.GetPersons();
var previouslySelectedPerson = selectedPerson;
dispatcher.Invoke(() =>
{
personDirectory.Clear();
personDirectory.AddRange(persons);
if (previouslySelectedPerson != null)
{
if (personDirectory.Any(p => p.Id == previouslySelectedPerson.Id))
{
SelectedPerson = previouslySelectedPerson;
}
}
});
}
catch (Exception)
{
//TODO: Publish operation failed
}
finally
{
IsBusy = false;
}
});
}
public static bool UpdatePerson(Person person)
{
int index = persons.FindIndex(p => p.Id == person.Id);
if (index < 0)
{
return false;
}
persons[index] = person;
return true;
}
public PersonDialogViewModel(IPersonService personService, IDispatcher dispatcher, IEventAggregator aggregator, IDialogService dialogService, Person person)
: base(personService, dispatcher, aggregator, dialogService)
{
this.person = new Person();
if (person != null)
{
this.person.Id = person.Id;
this.person.FirstName = person.FirstName;
this.person.LastName = person.LastName;
this.person.Age = person.Age;
this.Title = "Edit person";
this.CommandName = "Update";
ActionCommand = new DelegateCommand(Edit);
}
else
{
this.Title = "New person";
this.CommandName = "Create";
ActionCommand = new DelegateCommand(Add);
}
}
private void OnPersonDeleted(Person person)
{
this.personDirectory.Remove(person);
}
public static void AddPerson(Person person)
{
person.Id = currentId++;
persons.Add(person);
}
public bool UpdatePerson(Person person)
{
return FakeDatabase.UpdatePerson(person);
}
public bool CreatePerson(Person person)
{
FakeDatabase.AddPerson(person);
return true;
}
private void OnSelectedPersonChanged(Person person)
{
this.Person = person;
}
private void WhenPersonDeletedEventIsReceived(Person person)
{
personDeletedCallback.Invoke(person);
}
