编辑可变长度列表

Question

我想编辑一个变量列表，并想为商品创建ID

public class UserProfileFormViewModel
{

    public int UserProfileId { get; set; }
    public string UserProfile { get; set; }

    public virtual List<FormsAccess> FormsAccesses { get; set; }

}

public class FormsAccess
{
    [Key]
    public int Id { get; set; }
    public Forms Form { get; set; }
    public bool IsAccess { get; set; }
}

可见

foreach (var userProfileForm in Model.FormsAccesses)
{
                    Html.RenderPartial("_FormsAccessesEditorRow", userProfileForm);

}

和PartialView

@using (Html.BeginCollectionItem("FormsAccesses"))
{
 var id = "FormsAccesses_"+@Model.Id+"__IsAccess";
 @Html.HiddenFor(m => m.Id);
 <input type="checkbox" id="@id" class="chk-col-red" />
 <label for="@id">@Model.Form.GetDisplayName()</label>
 }

但是当我单击提交按钮时，FormsAccesses为空。