public async Task <IActionResult> Add(AuthorAddViewModel viewModel)
{
/* Inutile grazie al [Required]. */
//if (viewModel == null || string.IsNullOrWhiteSpace(viewModel.Name))
//{
// ModelState.AddModelError(nameof(viewModel.Name), "Nome vuoto!");
// return View(viewModel);
//}
await _context.Authors.AddAsync(new Author(0, viewModel.Name));
await _context.SaveChangesAsync();
return(View(viewModel));
}
/// <summary>
/// Checking author's input and sending it to the database
/// </summary>
/// <returns>True if author sent to DB, otherwise false</returns>
private bool AddItemAuthor()
{
AuthorAddViewModel viewmodel = (AuthorAddViewModel)DataContext;
Author author = viewmodel.MyAuthor;
if (string.IsNullOrEmpty(author.LastName))
{
MessageBox.Show("Last name cannnot be empty.");
return(false);
}
try
{
int id = MSAConnectionDB.SaveAuthorToDB(author);
author.AuthorId = id;
Authors.AddAuthor(author);
ActivateMainWindow();
}
catch (Exception e)
{
MessageBox.Show(e.Message);
}
return(true);
}
/// <summary>
/// Showing author's adding view
/// </summary>
/// <param name="sender">The source of the event</param>
/// <param name="e">The instance containing the event data</param>
private void AuthorAddView_Selected(object sender, RoutedEventArgs e)
{
DataContext = new AuthorAddViewModel();
}
