在MVC2中使用强类型帮助程序时,在发布帖子时不会从Model属性中获取输入字段值.这是默认行为吗？
强类型助手的(强类型)视图：
<div class="editor-label">
<%: Html.LabelFor(model => model.Name) %>
</div>
<div class="editor-field">
<%: Html.TextBoxFor(model => model.Name) %>
<%: Html.ValidationMessageFor(model => model.Name) %>
</div>
<div class="editor-label">
<%: Html.LabelFor(model => model.Price) %>
</div>
<div class="editor-field">
<%: Html.TextBoxFor(model => model.Price) %>
<%: Html.ValidationMessageFor(model => model.Price) %>
</div>
控制器操作：/ Product / Edit / 5
public ActionResult Edit(int id)
{
var p = new Product();
p.Name = "product 1";
p.Price = "100";
return View(p);
}
Html输出：
<div class="editor-label">
<label for="Name">Name</label>
</div>
<div class="editor-field">
<input id="Name" name="Name" type="text" value="product 1" />
</div>
<div class="editor-label">
<label for="Price">Price</label>
</div>
<div class="editor-field">
<input id="Price" name="Price" type="text" value="100" />
</div>
控制器操作：/ Product / Edit / 5
[HttpPost]
public ActionResult Edit(Product p)
{
p.Name = "prrrrrrd 2";
return View(p);
}
表单发布后的Html输出(下面我希望输入id =“Name”的值为“prrrrrrd 2.强类型帮助器从哪里得到它的值？)：
<div class="editor-label">
<label for="Name">Name</label>
</div>
<div class="editor-field">
<input id="Name" name="Name" type="text" value="product 1" />
</div>
<div class="editor-label">
<label for="Price">Price</label>
</div>
<div class="editor-field">
<input id="Price" name="Price" type="text" value="100" />
</div>
解决方法
When using strongly typed helpers in MVC2 the input field values
aren’t taken from the Model property when a post is made. Is this
default behavior?
是的,它们首先从ModelState中获取,然后从模型中获取.如果您打算在POST操作中对模型执行某些修改,则需要先从ModelState中删除它们.例如：
[HttpPost]
public ActionResult Edit(Product p)
{
ModelState.Remove("Name");
p.Name = "prrrrrrd 2";
return View(p);
}
