Отношения один к одному между двумя таблицами. Как получить внешний ключ из формы ввода?

Question

У меня проблема с отношением один к одному между двумя таблицами.Я не знаю, как связать две формы ввода, где одна форма привязана к одной таблице, а другая - к другой. Каждая форма имеет свой собственный вид и собственный контроллер.Пожалуйста, дайте мне совет или решение.

Это моя первая модель Ученик:

namespace Sport_student.Models
{
    public class student
    {


        [DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity)]
        public int StudentId { get; set; }
        [Display(Name = "Šifra ispitanika:")]
        [Range(1, 9999)]
        public int StudentNumber { get; set; }
        public string Gender { get; set; }
        [NotMapped]
        public List<SelectListItem> Genders { set; get; }

        [Display(Name = "Datum rođenja ispitanika:")]
        [DataType(DataType.Date)]
        public DateTime DateBirth { get; set; }
        [Display(Name = "Mjesto rođenja ispitanika:")]
        public string PlaceBirth { get; set; }
        public string Class { get; set; }
        [NotMapped]
        public List<SelectListItem> Classes { set; get; }

        [Display(Name = "Datum testiranja ispitanika:")]
        [DataType(DataType.Date)]
        public DateTime TestDate { get; set; }
        [Display(Name = "Godina rođenja majke:")]
        [Range(1900, 2000)]
        public int MumDate { get; set; }
        [Display(Name = "Godina rođenja oca:")]
        [Range(1900, 2000)]
        public int DadDate { get; set; }
        public string MumSport { get; set; }
        [NotMapped]
        public List<SelectListItem> MumSports { set; get; }
        public string DadSport { get; set; }
        [NotMapped]
        public List<SelectListItem> DadSports { set; get; }
        public string WhichSportMum { get; set; }
        [NotMapped]
        public List<SelectListItem> WhichSportMums { set; get; }
        public string WhichSportDad { get; set; }
        [NotMapped]
        public List<SelectListItem> WhichSportDads { set; get; }
        public string SportStudentPast { get; set; }
        [NotMapped]
        public List<SelectListItem> SportsStudentPast { set; get; }
        public string SportStudentWhat { get; set; }
        [NotMapped]
        public List<SelectListItem> SportsStudentWhat { set; get; }
        public string HowLong { get; set; }
        [NotMapped]
        public List<SelectListItem> HowLongs { set; get; }
        public string SameTime { get; set; }
        [NotMapped]
        public List<SelectListItem> SameTimes { set; get; }

        //proba
        [ForeignKey("MeasureId")]
        public int? MeasureId { get; set; }
        public virtual Measures Measures { get; set; }

    }


}

Это моя вторая модель:

namespace Sport_student.Models
{
    public class Measures
    {


        [Key]
        public int MeasureId { get; set; }
        [Display(Name = "Visina:")]
        public decimal Visina { get; set; }
        [Display(Name = "Težina:")]
        public decimal Tezina { get; set; }
        [Display(Name = "Skok u dalj:")]
        public decimal Sdaljmj { get; set; }
        [Display(Name = "Dvamet:")]
        public decimal Dvamet { get; set; }
        [Display(Name = "Japan:")]
        public decimal Japan { get; set; }
        [Display(Name = "Kus:")]
        public decimal Kus { get; set; }
        [Display(Name = "Pretkorak:")]
        public decimal Pretk { get; set; }
        [Display(Name = "Čučnjevi:")]
        public decimal Cucnjevi { get; set; }
        [Display(Name = "Bacmed:")]
        public decimal Bacmed { get; set; }
        [Display(Name = "Ravklup:")]
        public decimal Ravklup { get; set; }
        [Display(Name = "Ravnasa:")]
        public decimal Ravnasa { get; set; }
        [Display(Name = "BeepTest:")]
        public decimal BeepTest { get; set; }

        //proba
        public virtual student Student { get; set; }

    }


}

Контроллер для ученика:

        [HttpPost]
        [ValidateAntiForgeryToken]
        public async Task<IActionResult> Create([Bind("StudentId,StudentNumber,Gender,DateBirth,PlaceBirth,Class,TestDate,MumDate,DadDate,MumSport,DadSport,WhichSportMum,WhichSportDad,SportStudentPast,SportStudentWhat,HowLong,SameTime,MeasureId")] student student)
        {
            if (ModelState.IsValid)
            {

                _context.Add(student);
                await _context.SaveChangesAsync();
                return RedirectToAction(nameof(Index));

            }
            return View(student);
        }

Контроллер для мер:

       public async Task<IActionResult> Create_M([Bind("MeasureId,Visina,Tezina,Sdaljmj,Dvamet,Japan,Kus,Pretk,Cucnjevi,Bacmed,Ravklup,Ravnasa,BeepTest")] Measures measures)
        {
            if (ModelState.IsValid)
            {
                //tu stala

                _context.Add(measures);
                await _context.SaveChangesAsync();
                return RedirectToAction("Create","Student");
            }
            return View(measures);
        }

Просмотр с формой ввода для ученика:

<div class="row">
    <div class="col-md-6">
        <form asp-action="Create">
            <div asp-validation-summary="ModelOnly" class="text-danger"></div>
            <input type="hidden" asp-for="MeasureId" />
            <div class="form-group">
                <label asp-for="StudentNumber" class="control-label"></label>
                <input asp-for="StudentNumber" class="form-control" />
                <span asp-validation-for="StudentNumber" class="text-danger"></span>
            </div>
            <div class="form-group">
                <label>Spol:</label>
                @foreach (var item in @ViewBag.Genders)
                {
                    <input asp-for="Gender" type="radio" value="@item.Value" /> @item.Text
                }
            </div>
            <div class="form-group">
                <label asp-for="DateBirth" class="control-label"></label>
                <input asp-for="DateBirth" class="form-control" />
                <span asp-validation-for="DateBirth" class="text-danger"></span>
            </div>
            <div class="form-group">
                <label asp-for="PlaceBirth" class="control-label"></label>
                <input asp-for="PlaceBirth" class="form-control" />
                <span asp-validation-for="PlaceBirth" class="text-danger"></span>
            </div>
            <div class="form-group">
                <label>Razred:</label>
                @foreach (var item in @ViewBag.Classes)
                {
                    <input asp-for="Class" type="radio" value="@item.Value" /> @item.Text
                }
            </div>
            <div class="form-group">
                <label asp-for="TestDate" class="control-label"></label>
                <input asp-for="TestDate" class="form-control" />
                <span asp-validation-for="TestDate" class="text-danger"></span>
            </div>
            <div class="form-group">
                <label asp-for="MumDate" class="control-label"></label>
                <input asp-for="MumDate" class="form-control" />
                <span asp-validation-for="MumDate" class="text-danger"></span>
            </div>
            <div class="form-group">
                <label asp-for="DadDate" class="control-label"></label>
                <input asp-for="DadDate" class="form-control" />
                <span asp-validation-for="DadDate" class="text-danger"></span>
            </div>
            <div class="form-group">
                <label>Bavljenje sportom majke:</label>
                <select asp-for="MumSport" asp-items="@(ViewBag.MumSports)">

                    <option>Odaberi</option>
                </select>
            </div>
            <div class="form-group">
                <label>Bavljenje sportom oca:</label>
                <select asp-for="DadSport" asp-items="@(ViewBag.DadSports)">

                    <option>Odaberi</option>
                </select>
            </div>
            <div class="form-group">
                <label>Kojim se sportom najviše bavila majka:</label>
                <select asp-for="WhichSportMum" asp-items="@(ViewBag.WhichSportMums)">

                    <option>Odaberi</option>
                </select>
            </div>
            <div class="form-group">
                <label>Kojim se sportom najviše bavio otac:</label>
                <select asp-for="WhichSportDad" asp-items="@(ViewBag.WhichSportDads)">

                    <option>Odaberi</option>
                </select>
            </div>
            <div class="form-group">
                <label>Je li se polaznik do sada bavio nekim sportom?</label>
                @foreach (var item in @ViewBag.SportsStudentPast)
                {
                    <input asp-for="SportStudentPast" type="radio" value="@item.Value" /> @item.Text
                }
            </div>
            <div class="form-group">
                <label>Kojim sportom se bavio</label>
                <select asp-for="SportStudentWhat" asp-items="@(ViewBag.SportsStudentWhat)">

                    <option>Odaberi</option>
                </select>
            </div>
            <div class="form-group">
                <label>Koliko dugo?</label>
                @foreach (var item in @ViewBag.HowLongs)
                {
                    <input asp-for="HowLong" type="radio" value="@item.Value" /> @item.Text
                }
            </div>
            <div class="form-group">
                <label>Ispitanik se:</label>
                @foreach (var item in @ViewBag.SameTimes)
                {
                    <input asp-for="SameTime" type="radio" value="@item.Value" /> @item.Text
                }
            </div>
            <a href="~/Measures/Create_M">Create New</a>
            <div class="form-group">
                <input type="submit" value="Kreiraj" class="btn btn-primary" />
            </div>

        </form>
    </div>

</div>

Просмотр с формой ввода для мер:

<div class="row">
    <div class="col-md-4">
        <form asp-action="Create_M">
            <div asp-validation-summary="ModelOnly" class="text-danger"></div>
            <div class="form-group">
                <label asp-for="Visina" class="control-label"></label>
                <input asp-for="Visina" class="form-control" />
                <span asp-validation-for="Visina" class="text-danger"></span>
            </div>
            <div class="form-group">
                <label asp-for="Tezina" class="control-label"></label>
                <input asp-for="Tezina" class="form-control" />
                <span asp-validation-for="Tezina" class="text-danger"></span>
            </div>
            <div class="form-group">
                <label asp-for="Sdaljmj" class="control-label"></label>
                <input asp-for="Sdaljmj" class="form-control" />
                <span asp-validation-for="Sdaljmj" class="text-danger"></span>
            </div>
            <div class="form-group">
                <label asp-for="Dvamet" class="control-label"></label>
                <input asp-for="Dvamet" class="form-control" />
                <span asp-validation-for="Dvamet" class="text-danger"></span>
            </div>
            <div class="form-group">
                <label asp-for="Japan" class="control-label"></label>
                <input asp-for="Japan" class="form-control" />
                <span asp-validation-for="Japan" class="text-danger"></span>
            </div>
            <div class="form-group">
                <label asp-for="Kus" class="control-label"></label>
                <input asp-for="Kus" class="form-control" />
                <span asp-validation-for="Kus" class="text-danger"></span>
            </div>
            <div class="form-group">
                <label asp-for="Pretk" class="control-label"></label>
                <input asp-for="Pretk" class="form-control" />
                <span asp-validation-for="Pretk" class="text-danger"></span>
            </div>
            <div class="form-group">
                <label asp-for="Cucnjevi" class="control-label"></label>
                <input asp-for="Cucnjevi" class="form-control" />
                <span asp-validation-for="Cucnjevi" class="text-danger"></span>
            </div>
            <div class="form-group">
                <label asp-for="Bacmed" class="control-label"></label>
                <input asp-for="Bacmed" class="form-control" />
                <span asp-validation-for="Bacmed" class="text-danger"></span>
            </div>
            <div class="form-group">
                <label asp-for="Ravklup" class="control-label"></label>
                <input asp-for="Ravklup" class="form-control" />
                <span asp-validation-for="Ravklup" class="text-danger"></span>
            </div>
            <div class="form-group">
                <label asp-for="Ravnasa" class="control-label"></label>
                <input asp-for="Ravnasa" class="form-control" />
                <span asp-validation-for="Ravnasa" class="text-danger"></span>
            </div>
            <div class="form-group">
                <label asp-for="BeepTest" class="control-label"></label>
                <input asp-for="BeepTest" class="form-control" />
                <span asp-validation-for="BeepTest" class="text-danger"></span>
            </div>
            @*//@Html.HiddenFor(p => p.MeasureId);*@
            <div class="form-group">
                <input type="submit" value="Create" class="btn btn-primary" />
            </div>
        </form>
    </div>
</div>

Мои таблицы (Student, Measures) в базе данных верны, в таблице Student есть FK MeasureId.Я действительно не знаю, как соединить две формы ввода из двух разных видов в двух разных контроллерах. Пожалуйста, направьте меня в правильном направлении.Любой совет приветствуется.Примечание: данные из форм заполнены правильно, но внешний ключ в таблице Student остается нулевым