The absolute virtual path representation of virtualPath.
The VirtualPathUtility.ToAbsolute(string, string) overload of the erload:System.Web.VirtualPathUtility.ToAbsolute method uses the supplied application path rather than the current application path.
If virtualPath is:
Absolute, the VirtualPathUtility.ToAbsolute(string, string) method returns the virtual path with no changes.
Application relative, the VirtualPathUtility.ToAbsolute(string, string) method adds applicationPath to the beginning of the virtual path.
Not rooted, the VirtualPathUtility.ToAbsolute(string, string) method raises an ArgumentOutOfRangeException exception.