public EditPage() { PageService = SysPageService.Instance; TemplateService = SysTemplateService.Instance; ModuleService = SysModuleService.Instance; var recordId = HttpQueryString.GetValue("id").ToInt(); if (recordId <= 0) { return; } CurrentPage = SysPageService.Instance.GetByID(recordId); if (CurrentPage != null) { CurrentTemplate = SysTemplateService.Instance.GetByID(CurrentPage.TemplateID); } }