---
uid: web-api/videos/getting-started/custom-validation
title: "ASP.NET Web API, Part 5: Custom Validation | Microsoft Docs"
author: jongalloway
description: "Note: This video contains information from a pre-release version of ASP.NET Web API"
ms.author: aspnetcontent
manager: wpickett
ms.date: 02/15/2012
ms.topic: article
ms.assetid: f8eadb72-fa15-4537-8c6d-1b120e6d3aab
ms.technology: dotnet-webapi
ms.prod: .net-framework
msc.legacyurl: /web-api/videos/getting-started/custom-validation
msc.type: video
---
ASP.NET Web API, Part 5: Custom Validation
====================
by [Jon Galloway](https://github.com/jongalloway)

> [!NOTE]
> This video contains information from a pre-release version of ASP.NET Web API. For information on what changed, see the updated sample code at [https://code.msdn.microsoft.com/ASPNET-Web-API-JavaScript-d0d64dd7](https://code.msdn.microsoft.com/ASPNET-Web-API-JavaScript-d0d64dd7)

[▶ Watch video (3 minutes)](https://channel9.msdn.com/Blogs/ASP-NET-Site-Videos/custom-validation)