public static ToolStripItemAbstract GetToolStripItemDevByXml(string strXml)
        {
            ToolStripItemAbstract toolStripItem = null;
            XmlDocument           xmlDoc        = new XmlDocument();

            xmlDoc.LoadXml(strXml);
            toolStripItem =
                (ToolStripItemAbstract)FormElementEntityDevTypes.Instance.CreateInstance(Convert.ToInt32(xmlDoc.SelectSingleNode("Element/ControlType").InnerText));
            toolStripItem.FromXml(strXml);
            return(toolStripItem);
        }
        /// <summary>
        /// 获取一个工具栏项实例(根据Id)
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        public ToolStripItemAbstract GetEntity(string id)
        {
            XElement entityElement = (XElement)_cachingService.GetData(id);
            string   strEntity;

            if (entityElement == null)
            {
                string file      = Path.Combine(Constant.PACKAGE_NAVIGATION_TOOLSTRIP_FOLDER, id);
                bool   fileExist = _packageService.Current.Container(file);

                Debug.Assert(fileExist, "工具栏项文件不存在");
                if (fileExist == false)
                {
                    return(null);
                }

                strEntity     = _packageService.Current.GetFileContent(file);
                entityElement = XElement.Parse(strEntity);
                _cachingService.Add(id, entityElement);
            }
            else
            {
                strEntity = entityElement.ToString();
            }

            int controlType = Convert.ToInt32(entityElement.Element("ControlType").Value);

            ToolStripItemAbstract entity = _toolStripItemEntityTypesFactory.CreateInstance(controlType);

            if (entity == null)
            {
                Debug.Assert(false, "_toolStripItemsContainer.Create(controlType) 失败,返回了null");
                throw new Exception();
            }
            entity.FromXml(strEntity);

            return(entity);
        }