WriteXML 同时写入元素值和属性的用法

                XmlWriter AssembDataWrite = XmlWriter.Create(savepath);
                AssembDataWrite.WriteStartDocument();
                AssembDataWrite.WriteStartElement("Assemblies");
                AssembDataWrite.WriteStartElement("Assembly");
                AssembDataWrite.WriteElementString("UniqueNumber",abr.UniqueNumber); //VIN
                AssembDataWrite.WriteElementString("AssemblyNumber", abr.AssemblyNumber);  //VAN
                AssembDataWrite.WriteElementString("AssemblyType",abr.AssemblyType);//VP代码（PIC）
                AssembDataWrite.WriteElementString("ProductionPlantID", abr.ProductionPlantID);
                AssembDataWrite.WriteStartElement("Productions");
                AssembDataWrite.WriteStartElement("Production");
                AssembDataWrite.WriteElementString("TimeStamp", abr.TimeStamp.ToString());
                //AssembDataWrite.WriteElementString("ProtocolNumber", System.Guid.NewGuid().ToString());
                AssembDataWrite.WriteElementString("ProtocolNumber", abr.ProtocolNumber);
                AssembDataWrite.WriteElementString("EngineType", EngineType);
                AssembDataWrite.WriteElementString("EnginePartNumber", abr.EnginePartNumber);
                //AssembDataWrite.WriteElementString("MarketCode", Engine[3]);

                AssembDataWrite.WriteStartElement("FCSs");
                AssembDataWrite.WriteStartElement("FCS");  //开始元素
                AssembDataWrite.WriteStartAttribute("DD"); //开始此元素的属性
                AssembDataWrite.WriteString("SS");  //写入属性值
                AssembDataWrite.WriteEndAttribute();  //关闭属性
                AssembDataWrite.WriteString("12232");  //写入元素值
                AssembDataWrite.WriteEndElement();   //结束本元素
                AssembDataWrite.WriteEndElement();

                AssembDataWrite.WriteEndElement();
                AssembDataWrite.WriteEndElement();
                AssembDataWrite.WriteEndElement();
                AssembDataWrite.WriteEndElement();
                AssembDataWrite.WriteEndDocument();
                AssembDataWrite.Flush();
                AssembDataWrite.Close();