// To protect from overposting attacks, please enable the specific properties you want to bind to, for // more details see https://aka.ms/RazorPagesCRUD. public async Task <IActionResult> OnPostAsync() { if (!ModelState.IsValid) { return(Page()); } _context.Attach(Book).State = EntityState.Modified; try { await _context.SaveChangesAsync(); } catch (DbUpdateConcurrencyException) { if (!BookExists(Book.Id)) { return(NotFound()); } else { throw; } } return(RedirectToPage("./Index")); }
public async Task <IActionResult> OnPostAsync() { if (!ModelState.IsValid) { return(Page()); } var RentId = BookReturn.BookRentId; var BookId = _context.BookRent.Where(s => s.Id == RentId).FirstOrDefault().BookId; var RentQty = _context.BookRent.Where(r => r.Id == RentId).FirstOrDefault().Qty; var OriginalQty = _context.BookRent.Where(t => t.Id == RentId).FirstOrDefault().Qty; var UpdateQty = RentQty + OriginalQty; var entity = _context.Books.FirstOrDefault(item => item.Id == RentId); if (entity != null) { entity.Qty = UpdateQty; _context.Books.Update(entity); _context.SaveChanges(); } _context.BookReturn.Add(BookReturn); await _context.SaveChangesAsync(); return(RedirectToPage("./Index")); }
// To protect from overposting attacks, please enable the specific properties you want to bind to, for // more details see https://aka.ms/RazorPagesCRUD. public async Task <IActionResult> OnPostAsync() { if (!ModelState.IsValid) { return(Page()); } _context.Books.Add(Book); await _context.SaveChangesAsync(); return(RedirectToPage("./Index")); }
public async Task <IActionResult> OnPostAsync(int?id) { if (id == null) { return(NotFound()); } Student = await _context.Students.FindAsync(id); if (Student != null) { _context.Students.Remove(Student); await _context.SaveChangesAsync(); } return(RedirectToPage("./Index")); }
public async Task <IActionResult> OnPostAsync(int?id) { if (id == null) { return(NotFound()); } BookCategory = await _context.BookCategory.FindAsync(id); if (BookCategory != null) { _context.BookCategory.Remove(BookCategory); await _context.SaveChangesAsync(); } return(RedirectToPage("./Index")); }