Hi Nitin, I think, I already answered your query through Twitter & my Blog. You can't get the physical path in Silverlight (assume you want the client side path). If you want server side path, it is easy to do in your server side code & return thru service call. But, as it is Silverlight, I assume, you want the path of client PC. No, you can't. There are some security reason while the application is running inside the browser sandbox. If you install it as fully trusted out-of-browser application, you can get it. Read the Article for some reference: File Explorer using Silverlight 4 COM Interoperability[^]. It may help you. Don't forget to Click on [Vote] and [Good Answer] on the posts that helped you. Regards - Kunal Chowdhury | Software Developer | Chennai | India | My Blog | My Tweets | Silverlight Tutorial