---
title: "Model Validation in Asp.net MVC 4"
description: "In this blog, I’m explaining how to do model validation in asp.net mvc 4.Step 1:Open Visual Studio 2012 and create an asp.net mvc 4 application and ad"
author: "Sumit Kesarwani"
published: 2014-02-10
updated: 2014-09-18
canonical: https://www.mindstick.com/blog/646/model-validation-in-asp-dot-net-mvc-4
category: "asp.net mvc"
tags: ["asp.net mvc"]
reading_time: 3 minutes
---
# Model Validation in Asp.net MVC 4
In this blog, I’m explaining how to do [model validation](https://www.mindstick.com/forum/160269/what-is-required-data-annotation-how-does-it-affect-model-validation) in [asp.net mvc](https://www.mindstick.com/forum/155798/what-is-caching-in-asp-dot-net-mvc) 4.
Step 1:
Open [Visual Studio](https://www.mindstick.com/articles/12378/visual-studio-for-mac-is-out-of-beta-preview-now-officially-available) 2012 and create an asp.net mvc 4 application and add a controller named “HomeController.cs” to the controller folder in the solution explorer.
```
using ModelValidationApp.Models;using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.Mvc;namespace ModelValidationApp.Controllers{ public class HomeController : Controller { // // GET: /Home/ [HttpGet] public ViewResult Index() { return View(); } }}
```
##### Step 2:
Next add a model class named “Student.cs” like below:
```
using System;using System.Collections.Generic;using System.ComponentModel.DataAnnotations;using System.Linq;using System.Web;namespace ModelValidationApp.Models{ public class Student { [Required(ErrorMessage="Name is required")]//Make the field required public string name { get; set; } [Required(ErrorMessage="Address is required")] public string address { get; set; } [Required(ErrorMessage="Email is required")] [RegularExpression(".+\\@.+\\..+", ErrorMessage = "Invalid Email")]//Check for valid email address public string email { get; set; } }}
```
In an [MVC application](https://www.mindstick.com/forum/452/do-i-need-to-install-mvc-3-4-on-web-server-to-run-mvc-application), validation is typically applied in the domain model, rather than in the [user interface](https://www.mindstick.com/interview/22909/user-interface-objects-in-cocoa). This means that we define our validation criteria in one place, and it takes effect in any place the model class is used. ASP.NET MVC supports declarative [validation rules](https://www.mindstick.com/forum/158293/is-it-possible-to-create-custom-validation-rules-using-jquery-validation-if-so-how) defined with attributes from the **System.ComponentModel.DataAnnotations** namespace.
##### Step 3:
Now add a view to the project by right clicking on the “Index()” method in HomeController.cs and named it “Index.cshtml” and make it a strongly-typed view like below:
```
@model ModelValidationApp.Models.Student@{ Layout = null;} Index
Registration Form
@using(Html.BeginForm()) {
Name : @Html.TextBoxFor(m=>m.name) @Html.ValidationMessageFor(m=>m.name)
```
@Html.ValidationMessageFor() – will display the [error message](https://www.mindstick.com/forum/23174/error-message-the-page-you-are-requesting-cannot-be-served-because-of-the-extension-configuration) according to the field.
##### Step 4:
Now add another viewresult to the HomeController.cs like this:
```
public ViewResult Index(Student student) { if (ModelState.IsValid) { return View("Thanks",student); } else { return View(); } }
```
If ModelState will be valid then it will display the next view otherwise it will show the same view with [validation error](https://www.mindstick.com/forum/156619/validation-error-in-a-text-field-with-the-help-of-bootstrap) messages.
##### Step 5:
Now add another view to the project to display the values entered by user. To add a view, right click the newly created index() viewresult method in the HomeController and named it “Thanks.cshtml” and make it a strongly – typed view like below:
```
@model ModelValidationApp.Models.Student@{ Layout = null;} Thanks