使用textwriter向XML C#添加多个元素

我需要以下输出

<BatchFile>
   <BatchFileHeader>
     <MessageType>MSG103</MessageType>
     <Version>456</Version>
   <BatchFileHeader>

   <Vendor>
     <VendorType>VVV</VendorType>
   </Vendor>
</BatchFile>

但是我得到了以下错误

状态epilog中的令牌startelement将导致无效的xml 文件

---

我做错了什么？

你忘了写最外层的StartElement

添加以下内容可以解决您的问题

StringWriter stringwriter = new StringWriter();
XmlTextWriter xmlTextWriter = new XmlTextWriter(stringwriter);
xmlTextWriter.Formatting = Formatting.Indented;
xmlTextWriter.WriteStartDocument();

xmlTextWriter.WriteStartElement("BatchElement");

xmlTextWriter.WriteStartElement("BatchFileHeader");
xmlTextWriter.WriteElementString("MessageType", "MSG103"); 
xmlTextWriter.WriteElementString("MessageVersion", "456"); 
xmlTextWriter.WriteEndElement();

xmlTextWriter.WriteStartElement("Vendor");
xmlTextWriter.WriteElementString("Vendor", "VVV"); 
xmlTextWriter.WriteEndElement();

xmlTextWriter.WriteEndElement();
xmlTextWriter.WriteEndDocument();

---

您是否正在编写

元素，因为XML只允许最外层的一个元素。有关更多信息，请参阅此@targetarian在

xmlTextWriter.WriteStartDocument（）之后包含此元素；xmlTextWriter.WriteStarteElement（“批处理文件”）。。。。xmlTextWriter.WriteEndDocument（）谢谢。我没有最外层的元素，这就是错误的原因。
StringWriter stringwriter = new StringWriter();
XmlTextWriter xmlTextWriter = new XmlTextWriter(stringwriter);
xmlTextWriter.Formatting = Formatting.Indented;
xmlTextWriter.WriteStartDocument();

xmlTextWriter.WriteStartElement("BatchElement");

xmlTextWriter.WriteStartElement("BatchFileHeader");
xmlTextWriter.WriteElementString("MessageType", "MSG103"); 
xmlTextWriter.WriteElementString("MessageVersion", "456"); 
xmlTextWriter.WriteEndElement();

xmlTextWriter.WriteStartElement("Vendor");
xmlTextWriter.WriteElementString("Vendor", "VVV"); 
xmlTextWriter.WriteEndElement();

xmlTextWriter.WriteEndElement();
xmlTextWriter.WriteEndDocument();