C# EF核心更新链接对象

我正在尝试使用efcore更新一家公司及其联系方式，如示例JSON请求中所示

PUT https://localhost:6001/api/Company

{
  "CompanyId": 6,
  "Name": "string",
  "ContactDetail": {
    "Name": "string",
    "EmailAddress": "string",
    "Address1": "string",
    "Address2": "string",
    "Address3": "string",
    "PostCode": "string",
    "Telephone": "string"
  }
}

生成的EF Scaffold如下所示

public partial class Company
{
    public long CompanyId { get; set; }
    public string Name { get; set; }
    public virtual ContactDetail ContactDetail { get; set; }
}

public partial class ContactDetail
{
    public ContactDetail()
    {
        Company = new HashSet<Company>();
    }

    public long ContactDetailId { get; set; }
    public string Name { get; set; }
    public string EmailAddress { get; set; }
    public string Address1 { get; set; }
    public string Address2 { get; set; }
    public string Address3 { get; set; }
    public string PostCode { get; set; }
    public string Telephone { get; set; }

    public virtual ICollection<Company> Company { get; set; }
}

更新-我现在使用的解决方案是获取ContactDetail id，然后将其重新分配给对象

public Company Update(Company company)
{
    var currentCompany = GetById(companyId, true);

    // Update the contact detail id so that it know what one to update
    company.ContactDetail.ContactDetailId = currentCompany.ContactDetailId;

    _bigLoaderContext.Update(company);
    _bigLoaderContext.SaveChanges();
}

public Company Update(Company company)
{
    var currentCompany = GetById(companyId, true);

    // Update the contact detail id so that it know what one to update
    company.ContactDetail.ContactDetailId = currentCompany.ContactDetailId;

    _bigLoaderContext.Update(company);
    _bigLoaderContext.SaveChanges();
}

我加载对象以获取值时出错，因此必须使用GetById方法中的AsNoTracking获取该值

_bigLoaderContext.Company.AsNoTracking().FirstOrDefault(f => f.CompanyId == companyId);

_bigLoaderContext.Company.AsNoTracking().FirstOrDefault(f => f.CompanyId == companyId);

---

我现在使用的解决方案是获取ContactDetail id，然后将其重新分配给对象

public Company Update(Company company)
{
    var currentCompany = GetById(companyId, true);

    // Update the contact detail id so that it know what one to update
    company.ContactDetail.ContactDetailId = currentCompany.ContactDetailId;

    _bigLoaderContext.Update(company);
    _bigLoaderContext.SaveChanges();
}

public Company Update(Company company)
{
    var currentCompany = GetById(companyId, true);

    // Update the contact detail id so that it know what one to update
    company.ContactDetail.ContactDetailId = currentCompany.ContactDetailId;

    _bigLoaderContext.Update(company);
    _bigLoaderContext.SaveChanges();
}

我在加载对象以获取值时出错，因此必须使用GetById方法中的AsNoTracking来获取该值

_bigLoaderContext.Company.AsNoTracking().FirstOrDefault(f => f.CompanyId == companyId);

_bigLoaderContext.Company.AsNoTracking().FirstOrDefault(f => f.CompanyId == companyId);

假设它正常工作