title: How to call a webmethod asynchronously and partially render a control?
body: <p>I need to call a webmethod of a webservice asynchronously from code behind of a web page. 
  In the callback function I need to bind a gridview and render it. I want to partially render that gridview in the callback function in codebehind. </p>
  
  <p>How to implement that?</p>
  
  <p>Is it possible to implement all these in codebehind without using javascript?</p>