private void listBooksButton_Click(object sender, System.EventArgs e)
{
//clear the data grid
dataGrid1.DataSource = null;
//Call the service layer and
//ask it to fetch all books
IList books = BookServices.FetchAllBooks(context);
//bind the result to the data grid
dataGrid1.DataSource = books;
}
private void createBookButton_Click(object sender, System.EventArgs e)
{
//Call the service layer and
//ask it to create a new book object
Book book = BookServices.CreateBook(
context,
titleTextBox.Text,
isbnTextBox.Text);
//Display the id of the new author
bookIdTextBox.Text = book.Id.ToString();
}
private void deleteBookButton_Click(object sender, System.EventArgs e)
{
//Make sure the user has entered a book id
if (bookIdTextBox.Text == "")
{
MessageBox.Show("Please enter the id of the book first!");
return;
}
//Call the service layer and
//ask it to delete the book
BookServices.DeleteBook(
context,
int.Parse(bookIdTextBox.Text));
}
private void fetchBookButton_Click(object sender, System.EventArgs e)
{
//Make sure the user has entered a book id
if (bookIdTextBox.Text == "")
{
MessageBox.Show("Please enter the id of the book first!");
return;
}
//Call the service layer and
//ask it to fetch a book by id
Book book = BookServices.FetchBookById(
context,
int.Parse(bookIdTextBox.Text));
//Display the title and isbn
titleTextBox.Text = book.Title;
isbnTextBox.Text = book.Isbn;
}