Try this to show path in fileupload control:
myFileUpload.Attributes.Add("value", pathYouWantToShow);
Though, I have a query:
Once a user selects a file from local desktop and upload on your website, file is saved in some folder on your server and this path of the server is saved in DB. Nowhere at all path of local desktop of the user is taken into account (if so then it's ok or else...).
What's the point of showing the path in fileupload control? It will not be the original local path but server path. Further, Do you want to expose your server path?
Last thing, file upload controls does not retain path even during uploads. Once page is posted back, they too loose it and this has been done by design to keeping security concerns in check. You too should follow the same and avoid showing any path.