partial void DeleteBOOK(BOOK instance);
partial void InsertBOOK(BOOK instance);
partial void UpdateBOOK(BOOK instance);
private void detach_BOOKs(BOOK entity)
{
this.SendPropertyChanging();
entity.PUBLISHER = null;
}
private void attach_BOOKs(BOOK entity)
{
this.SendPropertyChanging();
entity.PUBLISHER = this;
}
private void detach_BOOKs(BOOK entity)
{
this.SendPropertyChanging();
entity.GENRE = null;
}
private void attach_BOOKs(BOOK entity)
{
this.SendPropertyChanging();
entity.GENRE = this;
}
public void insertbook()
{
try
{
BOOK b = new BOOK();
b.Book_ID = Convert.ToInt32(bookidbox.Text);
b.Book_Name = booknamebox.Text;
b.Book_Price = Convert.ToInt32(bookpricebox.Text);
b.Availability = availabilitycombobox.Text;
b.Language = languagebox.Text;
b.Publish_Year = Convert.ToInt32(yearbox.Text);
b.Publisher_Name = pubnamebox.Text;
// b.Publisher_ID = Convert.ToInt32(pub_idbox.Text);
b.Genre_Name = Genrecombobox.Text;
if (b.Publish_Year <= DateTime.Today.Year)
{
using (DataClasses1DataContext context = new DataClasses1DataContext())
{
foreach (BOOK b1 in context.BOOKs)
{
if (b1.Book_ID == b.Book_ID)
{
id_flag = true;
}
}
if (id_flag == true)
{
MessageBox.Show("Duplicate id detected");
}
else
{
BOOK_AUTHOR ba = new BOOK_AUTHOR();
foreach (AUTHOR a in context.AUTHORs)
{
if (a.Author_Name.ToLower() == authornamebox.Text.ToLower())
{
ba.Book_ID = b.Book_ID;
ba.Author_ID = a.Author_ID;
b.Author_Name = authornamebox.Text;
author_flag = true;
}
}
if (author_flag == false)
{
MessageBox.Show("Author not found.Click 'Add Author' to add Publisher.");
}
else
{
foreach (PUBLISHER p in context.PUBLISHERs)
{
if (b.Publisher_Name.ToLower() == p.Publisher_Name.ToLower())
{
b.Publisher_ID = p.Publisher_ID;
b.Publisher_Address = p.Publisher_Address;
publisher_flag = true;
}
}
if (publisher_flag == false)
{
MessageBox.Show("Publisher not found.Click 'Add Publisher' to add Publisher.");
}
else
{
foreach (GENRE g in context.GENREs)
{
if (b.Genre_Name == g.Genre_Name)
{
b.Genre_ID = g.Genre_ID;
}
}
context.BOOKs.InsertOnSubmit(b);
context.BOOK_AUTHORs.InsertOnSubmit(ba);
context.SubmitChanges();
MessageBox.Show("Book Added Succssessfully.");
}
}
}
}
}
else
{
MessageBox.Show("Invalid year");
}
}
catch (FormatException)
{
MessageBox.Show("Input Error.");
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString(), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}