AspNetCore.Docs/aspnetcore/tutorials/first-mvc-app/validation.md

---
title: Adding Validation
author: rick-anderson
description: How to add validation to an ASP.NET Core app.
keywords: ASP.NET Core,validation,DataAnnotations
ms.author: riande
manager: wpickett
ms.date: 04/13/2017
ms.topic: get-started-article
ms.technology: aspnet
ms.prod: asp.net-core
uid: tutorials/first-mvc-app/validation
---

[!INCLUDE[validation](../../includes/mvc-intro/validation.md)]

>[!div class="step-by-step"]
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Bulk metadata fix (#2871) * meta data fix * Revert "meta data fix" This reverts commit ba3688347667594a0967b08196cbb5308500a217. * meta data fix2 * test * Update owin-oauth-20-authorization-server.md * Update api-ref.md * Update api-ref.md * test * test2 2017-03-03 08:50:36 +08:00			`---`
remove \| MS Docs (#3612) 2017-07-01 07:47:15 +08:00			`title: Adding Validation`
Add docfx content 2016-10-29 01:35:15 +08:00			`author: rick-anderson`
Update validation.md 2017-08-04 04:38:29 +08:00			`description: How to add validation to an ASP.NET Core app.`
Trim keywords of keyword metadata Patch 3 2017-09-21 15:03:27 +08:00			`keywords: ASP.NET Core,validation,DataAnnotations`
Add docfx content 2016-10-29 01:35:15 +08:00			`ms.author: riande`
			`manager: wpickett`
validation xplat (#3220) 2017-04-14 06:01:09 +08:00			`ms.date: 04/13/2017`
set ms.topic to get-started-article (#3442) * set ms.topic * set ms.topic 2017-06-01 05:55:29 +08:00			`ms.topic: get-started-article`
title + meta on technology 2016-11-17 08:24:57 +08:00			`ms.technology: aspnet`
Bulk metadata fix (#2871) * meta data fix * Revert "meta data fix" This reverts commit ba3688347667594a0967b08196cbb5308500a217. * meta data fix2 * test * Update owin-oauth-20-authorization-server.md * Update api-ref.md * Update api-ref.md * test * test2 2017-03-03 08:50:36 +08:00			`ms.prod: asp.net-core`
Removed U+FEFF (#2073) * Removed U+FEFF * Removed leading FEFF * Update bootstrap.md * Update bundling-and-minification.md * Update knockout.md * Update using-grunt.md * Update yeoman.md * Update style-guide.md * Update error-handling.md * Update localization.md * Update middleware.md * Update validation.md * Update overview.md * Update view-components.md * Update iis-with-msdeploy.md * Update iis.md * Update web-publishing-vs.md * Update sociallogins.md * Update cors.md * Update machine-wide-policy.md * Update cross-site-scripting.md * Update overview.md * Update limited-lifetime-payloads.md * Update overview.md * Update password-hashing.md * Update key-encryption-at-rest.md * Update adding-model.md * Update new-field.md * Update validation.md * Update nano-server.md * Update your-first-mac-aspnet.md 2016-11-03 01:17:24 +08:00			`uid: tutorials/first-mvc-app/validation`
Add docfx content 2016-10-29 01:35:15 +08:00			`---`

validation xplat (#3220) 2017-04-14 06:01:09 +08:00			`[!INCLUDE[validation](../../includes/mvc-intro/validation.md)]`
Add docfx content 2016-10-29 01:35:15 +08:00
buttons and bylines (#2136) 2016-11-10 13:17:21 +08:00			`>[!div class="step-by-step"]`
			`[Previous](new-field.md)`
			`[Next](details.md)`