我有一个没有脚手架的 DateCreated 值的模型。来到 GET Edit 控制器操作，我看到模型具有传递到 Edit 视图的正确值。从视图回来，POST 方法，DateCreated 的值是 DateTime 默认值。它丢失了。有谁知道为什么？控制器和视图是脚手架的。
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Edit(Product product)
{
try
{
if (ModelState.IsValid)
{
product.DateEdited = DateTime.Now;
db.Entry(product).State = EntityState.Modified;
db.SaveChanges();
return RedirectToAction("Index");
}
}
catch (DataException dex)
{
Console.Write(dex.Message);
ModelState.AddModelError("", reg6.Resources.UnableToSaveChanges);
}
return View(product);
}
@model reg6.Models.Product
@{
ViewBag.Title = "Edit";
}
<h2>Edit</h2>
@using (Html.BeginForm()) {
@Html.AntiForgeryToken()
@Html.ValidationSummary(true)
<fieldset>
<legend>Product</legend>
<table>
<tr>
<td>
<div class="editor-label">
@Html.LabelFor(model => model.Name)
</div>
</td>
<td>
<div class="editor-field">
@Html.EditorFor(model => model.Name)
<div>
@Html.ValidationMessageFor(model => model.Name)
</div>
</div>
</td>
<tr>
<tr>
<td>
<div class="editor-label">
@Html.LabelFor(model => model.Description)
</div>
</td>
<td>
<div class="editor-field">
@Html.EditorFor(model => model.Description)
<div>
@Html.ValidationMessageFor(model => model.Description)
</div>
</div>
</td>
<tr>
<tr>
<td>
<div class="editor-label">
@Html.LabelFor(model => model.BasePrice)
</div>
</td>
<td>
<div class="editor-field">
@Html.EditorFor(model => model.BasePrice)
<div>
@Html.ValidationMessageFor(model => model.BasePrice)
</div>
</div>
</td>
<tr>
<tr>
<td>
<div>
@Html.ActionLink("Back to List", "Index")
</div>
</td>
<td align="right">
<input type="submit" value="Create" id='CreateButton' />
<td>
</tr>
</table>
</fieldset>
}