void Save()
{
foreach (var textBox in root.Children.OfType <TextBox>())
{
BindingExpression be = textBox.GetBindingExpression(TextBox.TextProperty);
be?.UpdateSource();
}
DateField.GetBindingExpression(DatePicker.SelectedDateProperty).UpdateSource();
AuthorField.GetBindingExpression(ComboBox.SelectedItemProperty).UpdateSource();
PublisherField.GetBindingExpression(ComboBox.SelectedItemProperty).UpdateSource();
var booksCollection = (Application.Current as App).LibraryData.Books;
if (impactType == ImpactType.Save)
{
if (!booksCollection.Contains <Book>(impact))
{
(Application.Current as App).LibraryData.Books.Add(impact);
}
else
{
MessageBox.Show("A book with the ISBN has already been added", "Error",
MessageBoxButton.OK, MessageBoxImage.Error);
}
}
Close();
}