public static string PhysicalPathToVirtual(string path)
        {
            if (HttpContext.Current != null && !String.IsNullOrEmpty(path))
            {
                return "/" + path.Replace(HttpContext.Current.Server.MapPath("/"), "").Replace(@"\", "/");
            }
            else return null;
        }
        public static string PhysicalPathToVirtual(HttpContext context, string path)
        {
            if (context != null && !String.IsNullOrEmpty(path))
            {
                return "/" + path.Replace(context.Server.MapPath("/"), "").Replace(@"\", "/");
            }
            else return null;
        }

public static string PhysicalPathToVirtual(string path) { if (HttpContext.Current != null && !String.IsNullOrEmpty(path)) { return "/" + path.Replace(HttpContext.Current.Server.MapPath("/"), "").Replace(@"\", "/"); } else return null; } public static string PhysicalPathToVirtual(HttpContext context, string path) { if (context != null && !String.IsNullOrEmpty(path)) { return "/" + path.Replace(context.Server.MapPath("/"), "").Replace(@"\", "/"); } else return null; }