---
uid: web-forms/videos/vs-2005/the-effects-of-viewstate
title: "The Effects of ViewState | Microsoft Docs"
author: rick-anderson
description: "The ASP.NET framework provides the ViewState mechanism to automatically maintain application state by carrying data forward and backward between browser requ..."
ms.author: aspnetcontent
ms.date: 02/26/2007
ms.assetid: 112e3efc-6865-4296-80a0-35910c4b3b12
msc.legacyurl: /web-forms/videos/vs-2005/the-effects-of-viewstate
msc.type: video
---
The Effects of ViewState
====================
by Eric Lee

The ASP.NET framework provides the ViewState mechanism to automatically maintain application state by carrying data forward and backward between browser requests. In this video we see how some ASP.NET controls such as the DropDownList and TextBox maintain state based on postback form values rather than ViewState, allowing the smart developer to disable unnecessary ViewState. Using Visual Studio Team System we can see how this dramatically reduces the size of request and response data, and improves the performance and scalability of the application.

[▶ Watch video (10 minutes)](https://channel9.msdn.com/Blogs/ASP-NET-Site-Videos/the-effects-of-viewstate)

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