C# 页面中未显示多个相关表的数据

我正在使用.NETCore2.2。运行时，FacultyInterestItem列表中显示以下输出，其中缺少Faculty或Keywords表数据。虽然学院和关键字类与学院实体相关

以下是剃须刀页面

<tbody>
    @foreach (var item in Model.FacultyInterestItems)
    {
        <tr>
 <td>     @Html.DisplayFor(modelItem => item.Id)           
        </td>                
 <td>
                @Html.DisplayFor(modelItem => item.Faculty.FacultyId)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.Keyword.Name)
            </td>
            <td>
                <a asp-page="./Edit" asp-route-id="@item.Id">Edit</a> |
                <a asp-page="./Details" asp-route-id="@item.Id">Details</a> |
                <a asp-page="./Delete" asp-route-id="@item.Id">Delete</a>
            </td>
        </tr>
    }
</tbody>

关键字表：

未从数据库中获取教员和关键字的数据。请告诉我解决方案

尝试调用Include方法

---

我这样做了，它在这一行facultyInterestItem=JsonConvert.DeserializeObjectresult上给出了错误；JsonSerializationException:反序列化数组时意外结束。路径“[0]。faculty.FacultyInterestims”，第1行，207号位置。已解决！谢谢Martin，问题在于我生成的模型，我在Faculties.cs中的公共虚拟ICollection FacultyInterestItems{get；set；}中删除了它

public async Task OnGetAsync()
{
    List<FacultyInterestItems> facultyInterestItem = new List<FacultyInterestItems>();
    HttpClient client = _api.Initial();
    HttpResponseMessage res = await client.GetAsync("api/FacultyInterestItems");
    if (res.IsSuccessStatusCode)
    {
        var result = res.Content.ReadAsStringAsync().Result;
        facultyInterestItem = JsonConvert.DeserializeObject<List<FacultyInterestItems>>(result);
    }
    List<Faculties> listOfFaculty = new List<Faculties>();
    res = await client.GetAsync("api/Faculties");
    if (res.IsSuccessStatusCode)
    {
        var result = res.Content.ReadAsStringAsync().Result;
        listOfFaculty = JsonConvert.DeserializeObject<List<Faculties>>(result);
    }
    List<Keywords> listOfKeywords = new List<Keywords>();
    res = await client.GetAsync("api/Keywords");
    if (res.IsSuccessStatusCode)
    {
        var result = res.Content.ReadAsStringAsync().Result;
        listOfKeywords = JsonConvert.DeserializeObject<List<Keywords>>(result);
    }
    FacultyInterestItems = facultyInterestItem;
    Keywords = listOfKeywords;
    Faculties = listOfFaculty;

}

[HttpGet]
public async Task<ActionResult<IEnumerable<FacultyInterestItems>>> GetFacultyInterestItems()
{
    return await _context.FacultyInterestItems.ToListAsync();
}

public partial class Faculties
{
    public Faculties()
    {
        FacultyInterestItems = new HashSet<FacultyInterestItems>();
        SuggestedKeywords = new HashSet<SuggestedKeywords>();
    }

    public long Id { get; set; }
    public string FacultyId { get; set; }
    public DateTime? UpdateDate { get; set; }
    public DateTime? InsertDate { get; set; }

    public virtual ICollection<FacultyInterestItems> FacultyInterestItems { get; set; }
    public virtual ICollection<SuggestedKeywords> SuggestedKeywords { get; set; }
}

public partial class FacultyInterestItems
{
    public long Id { get; set; }
    public long? FacultyId { get; set; }
    public int? KeywordId { get; set; }
    public DateTime InsertDate { get; set; }
    public DateTime UpdateDate { get; set; }

    public virtual Faculties Faculty { get; set; }
    public virtual Keywords Keyword { get; set; }
}

public partial class Keywords
{
    public Keywords()
    {
        FacultyInterestItems = new HashSet<FacultyInterestItems>();
    }

    public int Id { get; set; }
    public string Name { get; set; }
    public DateTime InsertDate { get; set; }
    public DateTime UpdateDate { get; set; }
    public int? DepartmentId { get; set; }

    public virtual Departments Department { get; set; }
    public virtual ICollection<FacultyInterestItems> FacultyInterestItems { get; set; }
}

 _context.FacultyInterestItems.Include(x => x.Faculty).Include(x => x.Keyword).ToListAsync()