Using Server control in Asp.net

Server control is a server side code written to respond to events from controls.They maintain their state between calls to the server and are easily identified by runat = "server" attribute.It must have an ID attribute to reference to the code.All server controls inherits from System.Web.UI.Control class.

Life cycle of Web Page and controls :-

The life cycle begins when the browser requests a web Page from a website.The Web Server constructs the web page objects and all of its child controls objects and uses these objects to render the Web page browser.later objects are destroyed.They are destroyed to free its resources.