Absolute Url Of List, List Item in SharePoint List or Library.

Some SharePoint objects expose relative paths.

Relative paths can be converted to full Url by adding current server, site paths.

To convert a relative path to the full URL, you add the current server,

Rather than performing path manipulation, "GetFullUrl" method can be used.

Example- Get Full Url Of A SharePoint List

SPUtility.GetFullUrl(SPContext.Current.Site, listobj.DefaultDisplayFormUrl);

Example- Get Full Url Of A SharePoint ListItem

SPUtility.GetFullUrl(SPContext.Current.Site,"/"+ itemobj.Url);