public ActionResult CheckDbFileValidity(int?page)
        {
            var unvalidFiles = this.Data.
                               Files
                               .All()
                               .ToList()
                               .Where(f => f is BinaryFile)
                               .Select(f => (BinaryFile)f)
                               .Where(f => FileManipulator.CheckFileValidity(f.Id, f.Type, f.Size) == false)
                               .AsQueryable()
                               .Project()
                               .To <FileViewModel>()
                               .OrderBy(f => f.Name)
                               .ToPagedList(page ?? 1, 50);

            var res = new SearchViewModel(unvalidFiles, null, false, null);

            return(View(res));
        }