我有两个类：公司和一个Review类。公司类包含一个列表Reviews。我添加了一个端点，它添加了一个Review，它也更新了公司类中的列表。但问题是列表永远不会更新，并且在添加Review后，Review类中的导航属性为null。
这两个类的代码：

public class Company
    {
        [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
        public int CompanyId { get; }
        [MaxLength(100)]
        public string CompanyName { get; set; } = string.Empty;
        [MaxLength(500)]
        public string CompanyDescription { get; set; } = string.Empty;
        [MaxLength(100)]
        public string Location { get; set; } = string.Empty;
        [MaxLength(50)]
        public string City { get; set; } = string.Empty;
        [MaxLength(50)]
        public string Category { get; set; } = string.Empty;
        [MaxLength(400)]
        public string PhotoUrl { get; set; }
        public List<Review> Reviews { get; set; } = new List<Review>();
    }

public class Review
    {
        [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
        public int ReviewId { get; set; }
        [Required,MaxLength(70)]
        public string JobTitle { get; set; } = string.Empty;
        [Required, MaxLength(1000)]
        public string Content { get; set; } = string.Empty;
        public DateTime TimeCreated { get; set; } = DateTime.UtcNow;
        public int TotalUpvotes { get; set; } = 0;
        public ApplicationUser User { get; set; }
        public string UserId { get; set; }
        public Company Company { get; set; }
        public int CompanyId { get; set; }
}

OnModelCreating中两个表的配置：对于公司表：

builder.HasKey(c => c.CompanyId);

            builder.HasMany(c=>c.Reviews)
                .WithOne(c => c.Company)
                .HasForeignKey(c => c.CompanyId);

对于审查表：

builder.HasKey(r => r.ReviewId);
            builder.HasOne(r=>r.User)
                .WithMany(r=>r.Reviews)
                .HasForeignKey(r=>r.UserId)
                .OnDelete(DeleteBehavior.ClientCascade);
            builder.HasOne(r => r.Company)
                .WithMany(r => r.Reviews)
                .HasForeignKey(r => r.CompanyId)
                .OnDelete(DeleteBehavior.ClientCascade);

添加新审阅服务：

public async Task<ServiceResponse<AddReviewResponseDto>> AddReview(AddReviewDto addReviewDto)
ServiceResponse<AddReviewResponseDto> AddReviewResponse = new ServiceResponse<AddReviewResponseDto>();

            //check if the current user is registered in the database
            var user = await _userManager.FindByIdAsync(GetUserId());

            if (user == null)
            {
                AddReviewResponse.Data = null;
                AddReviewResponse.Success = false;
                AddReviewResponse.Message = "Non Users can't add a review!";
                return AddReviewResponse;
            }

            var company = await _context.Companies.SingleOrDefaultAsync(c => c.CompanyId == addReviewDto.CompnayId);
            if (company == null)
            {
                AddReviewResponse.Data = null;
                AddReviewResponse.Success = false;
                AddReviewResponse.Message = "No company was found with this id!";
                return AddReviewResponse;
            }

           
            var review = new Review
            {
                JobTitle = addReviewDto.JobTitle,
                Content = addReviewDto.Content,
                User = user,
                Company = company

            };

            await _context.AddAsync(review);

            company.Reviews.Add(review);

            await _context.SaveChangesAsync();
            var addReviewResponseDto = new AddReviewResponseDto
            {
                TimeCreated = review.TimeCreated,
                ReviewId = review.ReviewId
            };

            AddReviewResponse.Data = addReviewResponseDto;
            AddReviewResponse.Success = true;
            AddReviewResponse.Message = "Review was added successfully";
            return AddReviewResponse;

}

执行完end Point后，结果如下：对于审查表：

"reviewId": 14,
    "jobTitle": "software engineer",
    "content": "I Love This Company",
    "timeCreated": "2023-03-23T18:54:04.7119397",
    "totalUpvotes": 0,
    "user": null,
    "userId": "userIdvalue",
    "company": null,
    "companyId": 6,
    "upvotes": []

对于公司表：

{
    "companyId": 6,
    "companyName": "Globe Exports",
    "companyDescription": "We Globe exportsare exporters of canned products, pasta, flour, biscuits, jams, honey, tahina, halawa, foul, tomato puree, biscuits, wafer,spices&bean.",
    "location": "Cairo, Egypt",
    "city": "Cairo",
    "category": "Food Industries",
    "photoUrl": "photoUrl",
    "reviewsCount": 0,
    "averageRating": 0,
    "reviews": []
}

我找了很多，也找不到问题出在哪里？！