public override void OnNavigatedFrom(Dictionary <string, object> viewModelState, bool suspending)
{
base.OnNavigatedFrom(viewModelState, suspending);
if (viewModelState != null)
{
AddEntityStateValue("entityErrorsCollection", SelectedEntity.GetAllErrors(), viewModelState);
}
}
// When Update button is pressed
private async void OnUpdateEntity()
{
string errorMessage = string.Empty;
bool isCreating = false;
SelectedEntity.ValidateProperties();
var updateErrors = SelectedEntity.GetAllErrors().Values.SelectMany(pc => pc).ToList();
if (updateErrors.Count == 0)
{
try {
LoadingData = true;
if (SelectedEntity.Id == 0)
{
isCreating = true;
CrudResult = await _entityRepository.CreateEntityAsync(SelectedEntity);
SelectedEntity = JsonConvert.DeserializeObject <List <Entity> >(CrudResult.Content.ToString()).FirstOrDefault <Entity>();
}
else
{
CrudResult = await _entityRepository.UpdateEntityAsync(SelectedEntity);
}
}
catch (ModelValidationException mvex) {
// there were server-side validation errors
DisplayEntityErrorMessages(mvex.ValidationResult);
}
catch (HttpRequestException ex) {
ErrorMessageTitle = isCreating ? ErrorMessagesHelper.CreateAsyncFailedError : ErrorMessagesHelper.UpdateAsyncFailedError;
ErrorMessage = ex.Message;
}
finally {
LoadingData = false;
RunAllCanExecute();
}
if (ErrorMessage != null && ErrorMessage != string.Empty)
{
MessageDialog messageDialog = new MessageDialog(ErrorMessage, ErrorMessageTitle);
await messageDialog.ShowAsync();
_navService.GoBack();
}
}
else
{
RunAllCanExecute();
}
}