void Save()
{
NameField.GetBindingExpression(TextBox.TextProperty).UpdateSource();
CityField.GetBindingExpression(TextBox.TextProperty).UpdateSource();
var publisherCollection = (Application.Current as App).LibraryData.Publishers;
if (impactType == ImpactType.Save)
{
if (!publisherCollection.Contains <Publisher>(impact))
{
(Application.Current as App).LibraryData.Publishers.Add(impact);
}
else
{
MessageBox.Show("The publisher is already added", "Error",
MessageBoxButton.OK, MessageBoxImage.Error);
}
}
}
