public IActionResult DeleteFromCart(string idsizesanpham) { string checktendangnhap = HttpContext.Session.GetString("TenDangNhap"); if (checktendangnhap != null && checktendangnhap != "") { string tendangnhap = HttpContext.Session.GetString("TenDangNhap"); TaiKhoanBUS taikhoanbus = new TaiKhoanBUS(); TaiKhoan taikhoan = taikhoanbus.CheckTaiKhoan(tendangnhap); GioHangBUS giohangbus = new GioHangBUS(); string thongbao = giohangbus.DeleteFromCart(taikhoan.Id.ToString(), idsizesanpham); return(RedirectToAction("GioHang", "SanPham", new { tendangnhap = tendangnhap })); } return(RedirectToAction("Index", "Home")); }