private async void OnRemoveCommand()
{
var isRefered = await _programmingLanguageRepository.IsReferencedByFriendAsync(SelectedProgrammingLanguage.Id);
if (isRefered)
{
await MessageDialogService.ShowInfoAsync($"The Language {SelectedProgrammingLanguage.Name} " +
$"can't be removed bcoz it is refered by at least of friend");
return;
}
SelectedProgrammingLanguage.PropertyChanged -= Wrapper_PropertyChanged;
_programmingLanguageRepository.Remove(SelectedProgrammingLanguage.Model);
ProgrammingLanguages.Remove(SelectedProgrammingLanguage);
SelectedProgrammingLanguage = null;
HasChanges = _programmingLanguageRepository.HasChanges();
((DelegateCommand)SaveCommand).RaiseCanExecuteChanged();
}
protected override async void OnDeleteExecute()
{
if (await _friendRepository.HasMeetingAync(Friend.Id))
{
await MessageDialogService.ShowInfoAsync($"{Friend.FirstName} can't be deleted, becouse " +
$"he is part of Meeting ");
return;
}
var result = await MessageDialogService.ShowOkCancelDialogAsync($"Do you realy want to delete friend {Friend.FirstName} ?", "Question");
if (result == MessageDialogResult.OK)
{
_friendRepository.Remove(Friend.Model);
await _friendRepository.SaveAsync();
RaiseDetailDeletedEvent(Friend.Id);
}
}
protected async override void OnSaveExecute()
{
try
{
await _programmingLanguageRepository.SaveAsync();
HasChanges = _programmingLanguageRepository.HasChanges();
RaiseCollectionSavedEvent();
}
catch (Exception ex)
{
while (ex.InnerException != null)
{
ex = ex.InnerException;
}
await MessageDialogService.ShowInfoAsync($"Error while saving the entities," +
$"the data will be reloaded. Details: {ex.Message}");
await LoadAsync(Id);
}
}
