Radio Buttons With Auto Postback

It is not possible for me to predict what you want, so let me know what you want and what is happening

Sir,

Radiobutton1   id= r1

Radiobutton2   id= r2

I have placed r1 & r2 on .aspx page. On page load r1 event fire and fetch all data from database. Then I select r2 and it's event fire and fetch data, but when I again select r1 it's event does't get fire..

Set AutoPostBack true for the RadioButtons

Sir,

 I have set AutoPostBack to True but it's still not working..

Then it is possible that there may be some JavaScripts that might have some error hence the ASP.Net AJAX JavaScript is failing. Remove all other JavaScripts and try