private void OnAddExecute()
{
var wrapper = new ProgrammingLanguageWrapper(new ProgrammingLanguage());
wrapper.PropertyChanged += Wrapper_PropertyChanged;
_programmingLanguageRepository.Add(wrapper.Model);
ProgrammingLanguages.Add(wrapper);
// trigger the validation
wrapper.Name = "";
}
public async override Task LoadAsync(int id)
{
Id = id;
foreach (var wrapper in ProgrammingLanguages)
{
wrapper.PropertyChanged -= Wrapper_PropertyChanged;
}
ProgrammingLanguages.Clear();
var languages = await _programmingLanguageRepository.GetAllAsync();
foreach (var model in languages)
{
var wrapper = new ProgrammingLanguageWrapper(model);
wrapper.PropertyChanged += Wrapper_PropertyChanged;
ProgrammingLanguages.Add(wrapper);
}
}
private async void OnRemoveExecute()
{
var isReferenced = await _programmingLanguageRepository.IsReferencedByFriendAsync(
SelectedProgrammingLanguage.Id);
if (isReferenced)
{
MessageDialogService.ShowInfoDialog(
$"The language {SelectedProgrammingLanguage.Name}" +
$"cannot be removed as it is referenced by at least one friend.");
return;
}
SelectedProgrammingLanguage.PropertyChanged -= Wrapper_PropertyChanged;
_programmingLanguageRepository.Remove(SelectedProgrammingLanguage.Model);
ProgrammingLanguages.Remove(SelectedProgrammingLanguage);
SelectedProgrammingLanguage = null;
HasChanges = _programmingLanguageRepository.HasChanges();
((DelegateCommand)SaveCommand).RaiseCanExecuteChanged();
}
public override async Task LoadAsync(int id)
{
Id = id;
foreach (var wrapper in ProgrammingLanguages)
{
wrapper.PropertyChanged -= Wrapper_PropertyChanged;
}
ProgrammingLanguages.Clear();
IEnumerable <ProgrammingLanguage> languages = await _programmingLanguageRepository.GetAllAsync();
foreach (var language in languages)
{
var wrapper = new ProgrammingLanguageWrapper(language);
wrapper.PropertyChanged += Wrapper_PropertyChanged;
ProgrammingLanguages.Add(wrapper);
}
}
