来自 Ajax.BeginForm 的响应没有提供新的模型值
本文关键字:模型 Ajax BeginForm 响应 来自 | 更新日期: 2023-09-27 18:36:29
我有一个 asp.net 的 mvc 应用程序,发布表单后遇到了一些问题。在操作中,我正在创建一个新模型,并在操作结束时返回。问题是传递的模型具有与帖子之前相同的值(我在 chrome 开发人员工具中检查了它)这是代码:
控制器:
public class TestController : Controller
{
public ActionResult Index()
{
return View(new MyViewModel());
}
[HttpPost]
public virtual ActionResult GetScore(MyViewModel userInputDetails)
{
userInputDetails.Name = "Meeee";
userInputDetails.Gender = "Yes Please!";
return PartialView("_MyPartialView", userInputDetails);
}
}
Index.cshtml:
<div class="container">
<div class="row">
<div class="col-md-12">
@using (Ajax.BeginForm("GetScore", "Test", new AjaxOptions()
{
InsertionMode = System.Web.Mvc.Ajax.InsertionMode.Replace,
HttpMethod = "POST",
UpdateTargetId = "partialResult"
}))
{
<div id="partialResult">
@Html.Partial("_MyPartialView", Model)
</div>
}
</div>
</div>
</div>
_MyPartialView.cshtml
@model MvcAjaxUpdateTest.ViewModels.MyViewModel
<table class="table table-bordered" >
<thead>
<tr>
<td>A1</td>
</tr>
<tr>
<td>A2</td>
</tr>
<tr>
<td>A2</td>
</tr>
</thead>
<tbody>
<tr>
<th>@Html.TextBoxFor(m => m.Name)</th>
</tr>
<tr>
<th>@Html.TextBoxFor(m => m.Gender)</th>
</tr>
<tr>
<th><input type="submit" name="Go" /></th>
</tr>
</tbody>
</table>
"我的视图模型.cs"
public class MyViewModel
{
public string Name { get; set; }
public string Gender { get; set; }
}
更改
已回发的值后,需要在控制器方法中执行ModelState.Clear()
。否则,视图将继续显示回发的 ModelState 中的值,即使模型中的值不同也是如此。
请记住,这也将清除所有模型错误,因此请确保将其全部包装在if(ModelState.IsValid){ }
即:
public class TestController : Controller
{
public ActionResult Index()
{
return View(new MyViewModel());
}
[HttpPost]
public ActionResult GetScore(MyViewModel userInputDetails)
{
if (ModelState.IsValid)
{
userInputDetails.Name = "Meeee";
userInputDetails.Gender = "Yes Please!";
ModelState.Clear();
}
return PartialView("_MyPartialView", userInputDetails);
}
}
或者,您可能只需从ModelState中删除这些值即可。
即:
userInputDetails.Name = "Meeee";
userInputDetails.Gender = "Yes Please!";
ModelState.Remove("Name");
ModelState.Remove("Gender");