AutoPostBack

• AutoPostBack allows a control to automatically post back when an event is fired.
  
• For example, If we have a Button control and want the event to be posted to the server for processing, we can set AutoPostBack = True on the button.
  
• AutoPostBack is caused by a control on the page.

Note: AutoPostBack can be disabled on an ASP.NET page by disabling AutoPostBack property.