C# 一对多关系上的.Net核心导航不起作用

我正在将.Net Framework网站转换为.Net核心网站

当我放置断点并钻取公司数据时，我看到了关系，但没有看到服务器数据。我已签入SQL Server并验证了我确实有一个公司和一个关联的服务器

我在SQL Server关系图中有一对多关系，如下所示：

公司的部分实体类别如下所示：

public class Company
{
    //
    [Required(ErrorMessage = "'Company Id' is required.")]
    public int CompanyId { get; set; }
    [Required(ErrorMessage = "'Company Short Name' is required."), MaxLength(12, ErrorMessage = "'CompanyShortName' must be 12 or less characters.")]
    public string CompanyShortName { get; set; }
    [Required(ErrorMessage = "'Company Name' is required."), MaxLength(80, ErrorMessage = "'CompanyName' must be 80 or less characters.")]
    public string CompanyName { get; set; }
    [MaxLength(80, ErrorMessage = "'Address' must be 80 or less characters.")]
    public string Address { get; set; }
    ...
    //
    public ICollection<Server> Servers { get; } = new List<Server>();
    public ICollection<ApplicationUser> Users { get; } = new List<ApplicationUser>();
    public ICollection<EmailTemplate> EmailTemplates { get; } = new List<EmailTemplate>();
    //
}

[Table("Servers")]
public class Server : IServer
{
    //
    [Required(ErrorMessage = "'Server Id' is required.")]
    public int ServerId { get; set; }
    [Required(ErrorMessage = "'Company Id' is required.")]
    public int CompanyId { get; set; }      // FK of the company that manages the server.
    [Required(ErrorMessage = "'Server Short Name' is required."),
        MinLength(6, ErrorMessage = "'Server Short Name' must be 6 or up to 12 characters."),
        MaxLength(12, ErrorMessage = "'Server Short Name' must be 12 or less characters.")]
    public string ServerShortName { get; set; }  // for login
    [Required(ErrorMessage = "'Server Name' is required."), MaxLength(80, ErrorMessage = "'Server Name' must be 80 or less characters.")]
    public string ServerName { get; set; }      // internal 
    ...
    //
    public virtual Company Company { get; set; }
    //
    public ICollection<ApplicationUserServer> UserServers { get; }
        = new List<ApplicationUserServer>();
    public ICollection<NetworkLog> NetworkLogs { get; }
        = new List<NetworkLog>();
    public ICollection<Incident> Incidents { get; }
        = new List<Incident>();
    //
}

    protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        base.OnModelCreating(modelBuilder);
        ...
        modelBuilder.Entity<Company>((item) =>
        {
            item.HasKey(c => c.CompanyId);
            item.HasMany(u => u.Servers).WithOne(s => s.Company).HasForeignKey(s => s.CompanyId);
            item.HasIndex(c => c.CompanyShortName).IsUnique()
                .HasName("Idx_Companies_ShortName");
        });
        //
        modelBuilder.Entity<Server>((item) =>
        {
            item.HasKey(s => s.ServerId);
            item.HasMany(u => u.UserServers).WithOne(u => u.Server).HasForeignKey(u => u.ServerId);
            item.HasOne(c => c.Company).WithMany(s => s.Servers)
                .HasForeignKey(s => s.CompanyId).OnDelete(DeleteBehavior.Restrict);
            // index
            item.HasIndex(s => s.ServerShortName).IsUnique()
                .HasName("Idx_AspNetServers_ShortName");
        });
        ...
    }

上市公司
{
//
[必需（ErrorMessage=“'Company Id'是必需的。”）]
public int CompanyId{get；set；}
[必需（ErrorMessage=“'Company Short Name'是必需的）”），最大长度（12，ErrorMessage=“'CompanyShortName'必须为12个或更少的字符）。]
公共字符串CompanyShortName{get；set；}
[必需（ErrorMessage=“'Company Name'是必需的”）、MaxLength（80，ErrorMessage=“'CompanyName'必须少于80个字符）。]
公共字符串CompanyName{get；set；}
[MaxLength（80，ErrorMessage=“'Address'必须少于80个字符。”）]
公共字符串地址{get；set；}
...
//
公共ICollection服务器{get；}=new List（）；
公共ICollection
您必须在查询结果中包含这些关系

using (var context = new BloggingContext())
{
    var blogs = context.Blogs
        .Include(blog => blog.Posts)
        .ToList();
}

导航属性不应该是
虚拟的吗
？您的属性不应该是虚拟的，尽管这里可能有输入错误。@WiktorZychla为什么您认为它应该是虚拟的？您在哪里看到
虚拟的
要求？这是正确的答案。但是，最好在回答链接时给出一个简短的解释，而不是只提供链接。这是为了避免将来断开链接。我最终使用了
virtual
和
Include
解决方案。