what is ispostback in asp.net

Question

pls an example

Sanjeeb Lenka · Answer

hi IsPostBack event is generated by the web controls to alert the server to take respected action of the event generated. When the button is clicked then click event is generated which further cause ispostback event & it alerts the server to take respected action during postback event. refer to this thread http://www.c-sharpcorner.com/Forums/Thread/195826/what-is-use-of-ispostback-in-Asp-Net.aspx or check this video for details http://www.youtube.com/watch?v=yZJQ4Z6kEzs

Riyaz Akhtar · Answer

Postback in an event that is triggered when a action is performed by a contol on a asp.net page. for eg. when you click on a button the data on the page is posted back to the server for processing. Is Postback is normally used on page _load event to detect if the page is getting generated due to postback requested by a control on the page or if the page is getting loaded for the first time. For Example: if(!IsPostBack)//also you can write IsPostBack==false { //It means your page has loaded first time. } if(IsPostBack)//also you can write IsPostBack==true { //It means your page has submitted. } See below link for more details: http://msdn.microsoft.com/en-us/library/aa720472(v=vs.71).aspx