asp.net-mvc – Controller如何知道MVC中DeleteConfirmed的Id？

嗨,有人可以解释一下Visual Studio生成的默认删除方法是如何工作的.我很困惑,因为当你发布DeleteConfirmed时,模型Id被传递回控制器.但是在View中,即使在隐藏字段中也没有生成Id字段,那么为什么Id不会丢失/重置在Post上？ Controller如何知道Id？

视图

@{
        ViewBag.Title = "Delete";
    }

<h2>Delete</h2>

<h3>Are you sure you want to delete this?</h3>
<fieldset>
    <legend>SellersQuery</legend>

    <div class="display-label">
         @Html.DisplayNameFor(model => model.Name)
    </div>
    <div class="display-field">
        @Html.DisplayFor(model => model.Name)
    </div>

    <div class="display-label">
         @Html.DisplayNameFor(model => model.Manufacturer)
    </div>
    <div class="display-field">
        @Html.DisplayFor(model => model.Manufacturer)
    </div>
</fieldset>
@using (Html.BeginForm()) {
    @Html.AntiForgeryToken()
    <p>
        <input type="submit" value="Delete" /> |
        @Html.ActionLink("Back to List","Index")
    </p>
}

调节器

public ActionResult Delete(int id = 0)
        {
            SellersQuery sellersquery = db.SellerQuerySet.Find(id);
            if (sellersquery == null)
            {
                return HttpNotFound();
            }
            return View(sellersquery);
        }

        [HttpPost,ActionName("Delete")]
        [ValidateAntiForgeryToken]
        public ActionResult DeleteConfirmed(int id)
        {
            SellersQuery sellersquery = db.SellerQuerySet.Find(id);
            db.SellerQuerySet.Remove(sellersquery);
            db.SaveChanges();
            return RedirectToAction("Index");
        }