/// <summary>
/// Checking genre's input and sending it to the database
/// </summary>
/// <returns>True if genre sent to DB, otherwise false</returns>
private bool AddItemGenre()
{
GenreAddViewModel viewmodel = (GenreAddViewModel)DataContext;
Genre genre = viewmodel.MyGenre;
if (string.IsNullOrEmpty(genre.Name))
{
MessageBox.Show("Name cannnot be empty.");
return(false);
}
foreach (var g in Genres.GenresList)
{
if (g.Name == genre.Name)
{
MessageBox.Show("Genre already exists!");
return(false);
}
}
try
{
int id = MSAConnectionDB.SaveGenreToDB(genre);
genre.GenreId = id;
Genres.AddGenre(genre);
ActivateMainWindow();
}
catch (Exception e)
{
MessageBox.Show(e.Message);
}
return(true);
}
/// <summary>
/// Save button - sending data to be save to DB
/// </summary>
/// <param name="sender">The source of the event</param>
/// <param name="e">The instance containing the event data</param>
private void Save_Button_Click(object sender, RoutedEventArgs e)
{
if (MSAConnectionDB.SaveDataToDB())
{
MessageBox.Show("Changes saved");
}
else
{
MessageBox.Show("No changes");
}
}
public MainWindow()
{
InitializeComponent();
try
{
MSAConnectionDB.LoadData();
DataContext = new
{
collection = new BooksListViewModel(),
detail = new BookDetailViewModel()
};
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
/// <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>
/// Checking books's input and sending it to the database
/// </summary>
/// <returns>True if book sent to DB, otherwise false</returns>
private bool AddItemBook()
{
BookAddViewModel viewmodel = (BookAddViewModel)DataContext;
Book book = viewmodel.MyBook;
if (string.IsNullOrEmpty(book.Title))
{
MessageBox.Show("Title cannnot be empty.");
return(false);
}
if (book.Author_AtBook == null)
{
MessageBox.Show("Author must be added.");
return(false);
}
if (book.Genre_AtBook == null)
{
MessageBox.Show("Genre must be added.");
return(false);
}
try
{
int id = MSAConnectionDB.SaveBookToDB(book);
book.BookId = id;
Books.AddBook(book);
Genres.AddBookToGenre(book, book.Genre_AtBook);
Authors.AddBookToAuthor(book, book.Author_AtBook);
ActivateMainWindow();
}
catch (Exception e)
{
MessageBox.Show(e.Message);
}
return(true);
}
