First getting data from controller, then how to send it back? asp.net core mvc

Question

I have made a Asp.net core view and getting data from database is working, but I want to add adding comments option. Comments send almost properly, but while sending a comment I need to pass "samochodId" from my asp.net core model which was passed first.

<div class="form-group">
   <label asp-for="Komentarz.Wiadomosc" class="col-md-2 control-label"></label>
   <div class="col-md-10">
      <input asp-for="Komentarz.Wiadomosc" class="form-control" />
         <span asp-validation-for="Komentarz.Wiadomosc" class="text-danger"></span>
         <input asp-for="Komentarz.samochodId" class="form-control" />
   </div>
</div>

This works, but I need to remove this line: <input asp-for="Komentarz.samochodId" class="form-control" /> and do the pass automaticly by getting this Id from My model (Model.Samochod.Id) or maybe from the route?. How Can I do this?

Answer 1

使用隐藏字段<input type="hidden" asp-for="Komentarz.samochodId" />并确保它在表单<form></form>元素的打开和关闭内