/// <summary>
/// Adds a single book to the database
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void AddBookBtn_Click(object sender, EventArgs e)
{
//If user enters valid data
if (isDataValid() == true)
{
MessageBox.Show("Saved the book to the database");
//Creates a single book object
Book b = new Book()
{
ISBN = isbnTxt.Text,
Title = titleTxt.Text,
Price = Convert.ToDecimal(priceTxt.Text)
};
//Once a book object has been created,
//set the new book into that property (Book.cs)
NewBook = b;
try
{
//Add the book to the database
BookDB.Add(b); //This .add is from BookDB's add method
DialogResult = DialogResult.OK;
}
catch
{
MessageBox.Show("We're having server issues");
}
}
}
private void PopulateBookList()
{
//Populate the allBooks list of books from the database
List <Book> allBooks = BookDB.GetAllBooks();
//Start with an empty list, so it doesn't re-add previous books causing duplicates
bookComboBox.Items.Clear();
//Adds all of the books from the database in the bookComboBox
foreach (Book b in allBooks)
{
bookComboBox.Items.Add(b);
}
}
private void PopulateBookList()
{
cboBook.Items.Clear();
try
{
List <Book> books = BookDB.GetAllBooks();
foreach (Book b in books)
{
cboBook.Items.Add(b);
}
}
catch (SqlException sqlex)
{
MessageBox.Show("We are having trouble loading book data at this time, please try again later.");
Application.Exit();
}
}
private void DeleteBookBtn_Click(object sender, EventArgs e)
{
if (string.IsNullOrEmpty(bookComboBox.Text))
{
MessageBox.Show("Please select a book");
return;
}
//Get the selected book
Book selectedBook = (Book)bookComboBox.SelectedItem;
string message = $"Are you sure you want to delete {selectedBook.Title} {selectedBook.ISBN}?";
DialogResult result = MessageBox.Show(text: message,
caption: "Delete?",
buttons: MessageBoxButtons.YesNo,
icon: MessageBoxIcon.Question);
if (result == DialogResult.Yes)
{
try
{
//Remove in database
BookDB.Delete(selectedBook.ISBN);
//Remove from the list
customerComboBox.Items.Remove(selectedBook);
MessageBox.Show("Book deleted");
PopulateBookList();
bookComboBox.Text = "";
}
catch (SqlException)
{
MessageBox.Show("Delete unsuccessful. The book you are trying to delete is currently registered to a customer.");
}
catch (Exception)
{
MessageBox.Show("No books deleted");
}
}
}
private void btnAddBook_Click(object sender, EventArgs e)
{
Book addBooks = new Book()
{
ISBN = txtISBN.Text,
Price = txtPrice.Text,
Title = txtTitle.Text
};
try
{
if (bookToAdd == null)
{
BookDB.AddBooks(addBooks);
MessageBox.Show("Book added");
}
}
catch (SqlException sqlex)
{
MessageBox.Show("We are having server issues, try again later.");
}
this.Close();
}
