How can i fill the content in update panel on button click

Question

1>
initially my update panel is completely blank
now i have to fill the control in that update panel from code behind
how i can achieve it

2>
is it possible to trigger the update panel from html conrol
such as <a href
here is it possible to update a panel
on ahref click

Javeed M Shaikh · Answer

Hi Amol Please take a look at this article for your question 1 answer: http://www.c-sharpcorner.com/uploadfile/c210df/how-to-bind-country-state-city-using-ajax-update-panel/ for question 2 answer try to use this javascript on your page: function pageLoad() { $addHandler($get('myhtmlButton') 'click' triggerAsyncPostBack); } function triggerAsyncPostBack(e) { __doPostBack(' ' ''); }