Harsha please UseCodeTags when posting code. It will highlight your code and make it much easier to read. It probably will also increase the number of people helping you. I will add them for you this time so that you can see the difference.
"Any fool can write code that a computer can understand. Good programmers write code that humans can understand." --- Martin Fowler
Please correct my English.
I’ve looked at a lot of different solutions, and in my humble opinion Aspose is the way to go. Here’s the link: http://aspose.com