public override bool PerformSave()
        {
            //normalize path
            Alias = Alias.Replace("/", "\\");

            var sheet = ApplicationContext.Current.Services.FileService.GetStylesheetByName(Alias);

            if (sheet == null)
            {
                sheet = new Stylesheet(Alias.EnsureEndsWith(".css"));
                ApplicationContext.Current.Services.FileService.SaveStylesheet(sheet);
            }

            _returnUrl = string.Format("settings/stylesheet/editStylesheet.aspx?id={0}", HttpUtility.UrlEncode(sheet.Path));
            return(true);
        }