AjaxControlToolkit.AsyncFileUpload.PopulateObjectPriorToRender C# (CSharp) Метод

        void PopulateObjectPriorToRender(string controlId)
        {
            bool exists;
            if(_persistFile)
                exists = PersistentStoreManager.Instance.FileExists(controlId);
            else
                exists = (_postedFile != null);

            if((!exists) && (this.Page != null && this.Page.Request.Files.Count != 0))
                ReceivedFile(controlId);
        }