با سلام

من در یک وب سایت که خودم با C# نوشتم از quartz استفاده کردم اما کد من در کنترلر های خودم به خوبی کار میکنه ولی وقتی کپی می کنم داخل external class کار نمیکنه

XmlTextWriter objX = new XmlTextWriter(HttpContext.Current.Server.MapPath("~/SamaTV.xml"), Encoding.UTF8);
            objX.WriteStartDocument();
            objX.WriteStartElement("rss");
            objX.WriteAttributeString("version", "2.0");
            objX.WriteStartElement("channel");
            objX.WriteElementString("title", "وب سایت داستان ما");
            objX.WriteElementString("link", "http://www.dastanema.com/");
            objX.WriteElementString("description", "اولین و بزرگترین مرجع شهادت های مسیحی فارسی زبان");
            objX.WriteElementString("language", "fa-ir");
            objX.WriteElementString("ttl", "60");
            objX.WriteElementString("image", "http://www.dastanema.com/Images/logo.png");
            objX.WriteElementString("lastBuildDate", String.Format("{0:R}", DateTime.Now));
            var articles = db.Article.Where(p => p.Category.Title != "عمومی").OrderBy(p => Guid.NewGuid()).Take(3).ToList();
            string url = "http://www.dastanema.com/Content/Single/";
            string image = "http://www.dastanema.com/Images/Articles_img/";
            string html = null;
            foreach (var item in articles)
            {
                objX.WriteStartElement("item");
                objX.WriteElementString("title", item.Title);
                objX.WriteElementString("author", item.CreateByUser);
                objX.WriteElementString("link", url + item.Article_ID);
                objX.WriteStartElement("enclosure");
                objX.WriteElementString("url", image + item.Image);
                objX.WriteElementString("type", "image/jpeg");
                objX.WriteEndElement();
                objX.WriteStartElement("guid");
                objX.WriteAttributeString("isPermaLink", "true");
                objX.WriteString("http://www.dastanema.com/");
                objX.WriteEndElement();
                objX.WriteElementString("pubDate", String.Format("{0:R}", item.CreateDate));
                objX.WriteStartElement("category");
                objX.WriteString(item.Category.Title);
                objX.WriteEndElement();
                objX.WriteElementString("description", item.Body);
                objX.WriteEndElement();
                html += "<div class='col-lg-4 col-md-6 col-sm-4 col-xs-12'><div class='videobox'><figure><a href='";
                html += url + item.Article_ID + "' target='_blank'><img src='";
                html += image + item.Image + "' alt='' class='img-responsive ' />";
                html += "</a><figcaption><h2 class='IRAN hidden-sm'><a href='";
                html += url + item.Article_ID + "'>" + item.Title + "</a></h2><h5 class='IRAN visible-sm'><a class='whiteit' href='";
                html += url + item.Article_ID + "'></a></h5><ul><li class='IRAN'><i class='fa fa-play'></i>&nbsp;" + item.Hit + "</li>";
                html += "<li class='IRAN'><i class='fa fa-bars'></i>&nbsp;" + item.Category.Title + "</li></ul><div class='clearfix'></div></figcaption></figure></div></div>";
            }
            objX.WriteEndElement();
            objX.WriteEndElement();
            objX.WriteEndDocument();
            objX.Flush();
            objX.Close();
            using (FileStream fs = new FileStream(HttpContext.Current.Server.MapPath("~/SamaTV.html"), FileMode.Create))
            {
                using (StreamWriter w = new StreamWriter(fs, Encoding.UTF8))
                {
                    w.WriteLine(html);
                }
            }