.net 操作web.config文件

                     XmlDocument doc = new XmlDocument();
                     string wc = HttpContext.Request.PhysicalApplicationPath + @"/web.config";

                     //设置修改节点路径
                     string changeNode = "/configuration/XryangConfig/CachingEnabled";

                     //加载web.config文件
                     doc.Load(wc);

                     //找到要修改的节点
                     XmlNode node = doc.SelectSingleNode(changeNode);

                     //设置节点的值
                     node.Attributes["Enabled"].InnerText = isOpen.ToString();

                     //保存设置
                     doc.Save(wc);

                     response.StatusCode = ;