编辑控制器 asp.net MVC（使用实体框架）

Question

I am having some trouble with my "edit view". I can create new items and view them no problem. I also can enter the edit form and view everything and change. But for some reason It won't accept my form on the date, even though it is the same date as I used to create the entry.

my edit controllers are as follows:

 public ActionResult Edit(int? id)
        {
            if (id == null)
            {
                return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
            }
            News news = db.News.Find(id);
            if (news == null)
            {
                return HttpNotFound();
            }
            return View(news);
        }

        // POST: /Newss/Edit/5
        // To protect from overposting attacks, please enable the specific properties you want to bind to, for 
        // more details see http://go.microsoft.com/fwlink/?LinkId=317598.
        [HttpPost]
        [ValidateAntiForgeryToken]
        public ActionResult Edit([Bind(Include="ID,title,body,category,dateCreated")] News news)
        {
            if (ModelState.IsValid)
            {

                db.Entry(news).State = EntityState.Modified;
                db.SaveChanges();
                return RedirectToAction("Index");
            }
            return View(news);
        }

My edit view is as follows:

@model NewsFeed.Models.News

@{
    ViewBag.Title = "Edit";
}

<h2>Edit</h2>


@using (Html.BeginForm())
{
    @Html.AntiForgeryToken()

    <div class="form-horizontal">
        <h4>News</h4>
        <hr />
        @Html.ValidationSummary(true)
        @Html.HiddenFor(model => model.ID)

        <div class="form-group">
            @Html.LabelFor(model => model.title, new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.title)
                @Html.ValidationMessageFor(model => model.title)
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.body, new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.body)
                @Html.ValidationMessageFor(model => model.body)
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.category, new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.category)
                @Html.ValidationMessageFor(model => model.category)
            </div>
        </div>
        <div class="form-group">
            @Html.LabelFor(model => model.dateCreated, new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.dateCreated)
                @Html.ValidationMessageFor(model => model.dateCreated)
            </div>
        </div>


        <div class="form-group">
            <div class="col-md-offset-2 col-md-10">
                <input type="submit" value="Save" class="btn btn-default" />
            </div>
        </div>
    </div>
}

<div>
    @Html.ActionLink("Back to List", "Index")
</div>

@section Scripts {
    @Scripts.Render("~/bundles/jqueryval")
}

Edit

Model:

public class News
    {
        public int ID { get; set; }
        [Required(ErrorMessage = "Title is Required")] 
        public string title { get; set; }
        [Required(ErrorMessage = "Body is Required")] 
        public string body { get; set; }
        public Category category { get; set; }
        public DateTime dateCreated { get; set; }


        public enum Category 
        {
            Sports,
            News,
            Politics,
            Education
        }

Answer 1

Change datetime to nullable , it should work. This was what worked on my project.