here is the code.Unable to find the issue
While I’m not sure what exactly is going wrong for you, one thing I can see being problematic is that you’re not encoding your query string correctly for the intent.
Instead of: "https://twitter.com/intent/tweet?url=http://localhost:9648/WebForm1.aspx&text=testing web intents "
You want to encode those characters correctly, such as: “https://twitter.com/intent/tweet?url=http%3A%2F%2Flocalhost%3A9648%2FWebForm1.aspx%26text%3Dtesting%20web%20intents%20”
thank u… i have encoded querystring…still its not working in IE8.