請教大家
參考https://www.dotblogs.com.tw/chichiBlog/2020/05/13/122030 說明, 有邦友知道controller設定是要加在那裏呢?

contorller 設定
(路徑的部分請自行修正)
        //CKEditorFuncNum，是ckeditor呼叫時自動把參數加在網址上傳(GET)過來的，
        //目的是識別最後要把圖片塞到哪個ckeditor
      
        [HttpPost]
        public ActionResult UploadImg( string CKEditorFuncNum, HttpPostedFileBase upload)
        {           
            string path = "";
            string message = "";
            if (upload != null)
            {
                string filename = Path.GetFileName(upload.FileName);
                if (upload.ContentLength > 0)
                {
                    path = Path.Combine(Server.MapPath("~/upload/img"), filename);
                    upload.SaveAs(path);

                    string imgUrl = "/upload/img" + filename;
                    message = "window.parent.CKEDITOR.tools.callFunction('" + CKEditorFuncNum + "', '"+ imgUrl + "')";
                }
            }
            else
            {
                message = "上傳失敗";
            }
            return Content("<script>" + message + "</script>");
        }