Data Annotation: Can't see error message in Required Attrib.

marcelo presto

Hello!

I'm newbie in ASP.NET and i'm trying to use Data Annotations, but it's not working properly. The problem is when I try to submit a form without fill all Required fields I don't see the error message. The ModelState "if" in the controller seems to work fine because I only see the Content "Working properly!" if I fill both textbox. I want to see the error message. How do I do that?

The Model:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.ComponentModel.DataAnnotations;
namespace Test.Marcelo.Models
{
public class User
{
[Required(ErrorMessage ="Name is mandatory.")]
public string Name { get; set; }
[Required(ErrorMessage ="Last Name is mandatory.")]
public string LastName { get; set; }
}
}

Controller:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.ComponentModel.DataAnnotations;
using Test.Marcelo.Models;
namespace Test.Marcelo.Controllers
{
public class HomeController : Controller
{
// GET: Home
public ActionResult Index()
{
return View();
}
public ActionResult UserForm()
{
return View();
}
[HttpPost]
public ActionResult Record(User usr)
{
if (ModelState.IsValid)
{
return Content("Working properly!");
}
return RedirectToAction("Index");
}
}
}

The View:

@model Test.Marcelo.Models.User
@{
ViewBag.Title = "UserForm";
}
@using (Html.BeginForm("Record", "Home"))
{
@Html.LabelFor(m => m.Name)
@Html.TextBoxFor(m => m.Name)
@Html.ValidationMessageFor(m => m.Name)
@Html.LabelFor(m => m.LastName)
@Html.TextBoxFor(m => m.LastName)
@Html.ValidationMessageFor(m => m.LastName)
"submit" value="Record" />
}

4 Replies

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marcelo presto9y ago
Ravi Patel: I did and when I fill both Required textbox I get "Working Properly". When I don't I get the name "Record". Just it.

Bryian Tan: I don't know where BundleConfig.cs is located. I use Visual Studio Community 2017 and when I put this file name in Search Solution Explorer it founds nothing.

Ramesh Palanivel: Your first two suggestions did not work. Yout third showed ModelState.IsValid value = false when I don't fill both textboxes. Whe I do, the value is True
0
Ravi Patel9y ago
Hi ,

try this
[HttpPost]
public ActionResult Record(User usr)
{
if (!ModelState.IsValid)
{
return View(ModelState);
}
return Content("Working properly!");
}
0
Bryian Tan9y ago
Make sure the application has all the necessary client scripts

https://stackoverflow.com/questions/28366314/mvc5-data-annotations-client-side-validation-not-happening
0
Ramesh Palanivel9y ago
Hi marcelo,

Clean your solution and rebuild the project and try again.

Or

add the below code in your html.beginform and try again,

@Html.ValidationSummary();

Or

Please set the breakpoint in your Record action result and check whether the model state condition true or false.

Please send the screenshot also.
0