private void btnRent_Click(object sender, EventArgs e)
{
//#TODO::ExceptionHandle
LibraryDBEntities entity = new LibraryDBEntities();
LibTran t = new LibTran();
int member_id = 0;
int book_id = 0;
try
{
book_id = Convert.ToInt32(txtBookID.Text);
}
catch
{
MessageBox.Show("BookID you entered is not valid type.");
return;
}
try
{
member_id = Convert.ToInt32(txtMemberID.Text);
}
catch
{
MessageBox.Show("MemberID you entered is not valid type.");
return;
}
Book book = EntityBroker.getBookByBookID(book_id);
if (book == null)
{
MessageBox.Show("BookID doesn't exit.");
return;
}
if (book.BookStatus != 1)
{
MessageBox.Show("Book is not avaiable to rent.");
return;
}
Member member;
member = EntityBroker.getMemberByMemberID(member_id);
if (member == null)
{
MessageBox.Show("MemberID doesn't exit.");
return;
}
t.MemberID = member_id;
t.BookID = book_id;
t.LendDate = DateTime.Now;
entity.AddToLibTrans(t);
try
{
entity.SaveChanges();
}catch {
MessageBox.Show("User not exit");
}
Book b = entity.Books.Where(x => x.BookID == t.BookID).SingleOrDefault();
b.BookStatus = 0;
int i = entity.SaveChanges();
if (i == 1)
{
try
{
ucListBooks booklist = new ucListBooks();
booklist.setMainWindowRefrence(MainWindowObject);
MainWindowObject.RequestContentChange(booklist);
}
catch {
MessageBox.Show("Exception. Please close the window manually. Sorry for inconvenience");
}
}
this.Close();
}
