you can simply use anchor tag (the anchor tag you need to build and render dynamically in code) and you just add an href attribute to the link which is displayed, add one more attribute target="_blank"

string navigate = new Uri(SPContext.Current.Web.Url).AbsolutePath;
string  url = navigate + "/" + fname;

Hi Nizam,

Can you provide some sample I can refer to?thanks.

ok, already found the solution

just need to use this code

currentVersionRow["FileNavigationUrl"] = SPContext.Current.Web.Url.ToString() + "/" + file.Url;

and its all done, thanks all...