public async Task <IActionResult> OnPostAsync() { if (!ModelState.IsValid) { return(Page()); } _context.Attach(GlobalVar).State = EntityState.Modified; await _context.SaveChangesAsync(); return(RedirectToPage("ManageSystem")); }
public async Task <IActionResult> OnPostAsync(int?id) { if (id == null) { return(NotFound()); } Student = await _context.Student.FirstOrDefaultAsync(m => m.ID == id); Seat = await _context.Seat.FirstOrDefaultAsync(s => s.Student.ID == id); Seat.Student = new Models.Student(); if (Student != null) { _context.Attach(Seat).State = EntityState.Modified; _context.Student.Remove(Student); await _context.SaveChangesAsync(); } return(RedirectToPage("Sessions")); }