---
uid: web-forms/videos/aspnet-ajax/how-do-i-determine-whether-an-asynchronous-postback-has-occurred
title: "[How Do I:] Determine Whether an Asynchronous Postback has Occurred? | Microsoft Docs"
author: JoeStagner
description: "The Page_Load method of an ASP.NET Web form will execute during either a standard full-page postback or an asychnronous partial-page postback. In this video..."
ms.author: riande
ms.date: 07/25/2007
ms.assetid: aabc168b-582a-4668-90b1-3d700285aa1a
msc.legacyurl: /web-forms/videos/aspnet-ajax/how-do-i-determine-whether-an-asynchronous-postback-has-occurred
msc.type: video
---
[How Do I:] Determine Whether an Asynchronous Postback has Occurred?
====================
by [Joe Stagner](https://github.com/JoeStagner)

The Page\_Load method of an ASP.NET Web form will execute during either a standard full-page postback or an asychnronous partial-page postback. In this video we learn how we can use the ASP.NET AJAX ScriptManager to determine whether an UpdatePanel postback has occurred, which allows us to conditionally execute code.

[▶ Watch video (5 minutes)](https://channel9.msdn.com/Blogs/ASP-NET-Site-Videos/how-do-i-determine-whether-an-asynchronous-postback-has-occurred)

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