我不明白为什么ModelState.isValid会以各种方式给我。我在电子邮件中设置了一些返回true并且我在空字段中输入,它也返回true。我的问题是,当该字段为空且我没有写过电子邮件时,我该怎么做才能返回?
我有下一个视图文件:
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
<div style="padding-top:5px;clear:both;"></div>
<% using (Html.BeginForm()) { %>
<%: Html.ValidationSummary(true) %>
<fieldset>
<legend>Email usuario</legend>
<div class="editor-field">
<%: Html.TextBoxFor(m => m.Email) %>
<%: Html.ValidationMessageFor(m => m.Email) %>
</div>
<input type="submit" value="Enviar Email" />
</fieldset>
<% } %>
<div style="padding-top:5px;clear:both;"></div>
</asp:Content>
控制器是:
//
// GET: /Account/EmailRequest
public ActionResult EmailRequest()
{
return View();
}
[HttpPost]
public ActionResult EmailRequest(string email)
{
if (ModelState.IsValid)
{
// save to db, for instance
return RedirectToAction("AnotherAction");
}
return View();
}
我的模特课是:
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Globalization;
using System.Web.Mvc;
using System.Web.Security;
namespace PortalClient.Models
{
public class EmailRequest
{
[Required(ErrorMessage = "required")]
public string Email { get; set; }
}
}
答案 0 :(得分:6)
将帖子操作的签名从string email
更改为EmailRequest model
,然后检查状态。 e.g。
[HttpPost]
public ActionResult EmailRequest(EmailRequest model)
{
if (ModelState.IsValid)
{
// save to db, for instance
return RedirectToAction("AnotherAction");
}
return View();
}
答案 1 :(得分:3)
您需要将视图模型绑定到视图。
将您的EmailRequest模型更改为更具描述性的内容:
public class EmailRequestViewModel
{
[Required(ErrorMessage = "Required")]
public string Email { get; set; }
}
您的获取操作方法如下所示:
public ActionResult EmailRequest()
{
EmailRequestViewModel viewModel = new EmailRequestViewModel();
return View(viewModel);
}
您的帖子操作方法:
public ActionResult EmailRequest(EmailRequestViewModel viewModel)
{
// Check for null view model
if (!ModelState.IsValid)
{
return View(viewModel);
}
// Do whatever you need to do
return RedirectToAction("List");
}
然后你的观点。请原谅ASP.NET MVC 4代码,MVC 2是史前的:)这只是你观点的一部分:
@model YourProject.ViewModels.EmailRequestViewModel
@using (Html.BeginForm())
{
@Html.TextBoxFor(x => x.Email)
@Html.ValidationMessageFor(x => x.Email)
}
我希望这会有所帮助。
答案 2 :(得分:-1)
您需要首先将模型与binder绑定,以便能够通过Modelstate.IsValid检查它
public ActionResult EmailRequest()
{
EmailRequest email = new EmailRequest();
TryUpdateModel(email);
if (ModelState.IsValid)
{
// save to db, for instance
return RedirectToAction("AnotherAction");
}
return View();
}