---
title: "PostBack in ASP.Net"  
description: "PostBack is an event that is triggered when an action is performed by an ASP.Net Control.  For example when we click on an asp button, the data on the"  
author: "Dev Vrat Sahu"  
published: 2012-08-22  
updated: 2014-09-18  
canonical: https://www.mindstick.com/blog/342/postback-in-asp-dot-net  
category: "asp.net"  
tags: ["asp.net"]  
reading_time: 1 minute  

---

# PostBack in ASP.Net

[PostBack](https://www.mindstick.com/blog/490/postback-in-asp-dot-net) is an event that is triggered when an [action](https://www.mindstick.com/forum/155751/define-action-method-in-mvc) is performed by an [ASP.Net](https://www.mindstick.com/articles/934/default-folders-available-inside-the-asp-dot-net-application-folder) [Control](https://www.mindstick.com/blog/197/asp-dot-net-repeater-control). For example when we click on an asp [button](https://www.mindstick.com/articles/63/how-to-add-button-in-datagridview-in-csharp-dot-net), the data on the page is posted back to the [server](https://www.mindstick.com/articles/43769/what-is-serverless-architecture-is-it-worth-switching-over) for processing. PostBack is the name given to the [process](https://yourviews.mindstick.com/story/1525/7-important-factors-that-may-affect-the-learning-process) of submitting an ASP.NET page to the server for processing.

\
IsPostBack-This [property](https://www.mindstick.com/blog/205/property-notification-in-c-sharp) is automatically set to False whenever a page is called for first time and whenever a server [redirect](https://www.mindstick.com/forum/2005/radio-button-redirect) a new [instance](https://www.mindstick.com/forum/1739/object-reference-is-not-set-to-an-instance-of-an-object-error-in-my-code) of a page this property is set to True.

##### AutoPostBack-This property is by default set to False. So if we perform some action on control such as DropDownList, no events are performed because events are not recognized.

---

Original Source: https://www.mindstick.com/blog/342/postback-in-asp-dot-net

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