错误“<；节点名称>；没有预料到“；使用XmlWriter创建XML时

本文关键字：使用 XmlWriter XML 创建 节点 lt 错误 gt | 更新日期: 2023-09-27 17:59:30

我正在开发一个应用程序，我正在以XML格式保存数据，但我在正确获取格式方面遇到了问题。

输出看起来像这个

 <GasInfoEntries>
   <Gallons>123</Gallons>
   <Price>456</Price>
 </GasInfoEntries><GasInfoEntries>
   <Gallons>123</Gallons>
   <Price>456</Price>
 </GasInfoEntries>

我用这个写

List<GasInfoEntries> data = new List<GasInfoEntries>();
                        data.Add(new GasInfoEntries() { Gallons = TxtBoxGas.Text, Price = TxtBoxPrice.Text });
                        xmlWriter.WriteStartDocument();
                        xmlWriter.WriteStartElement("GasInfoEntries");
                        xmlWriter.WriteStartElement("Gallons", "");
                        xmlWriter.WriteString(TxtBoxGas.Text);
                        xmlWriter.WriteEndElement();

                        xmlWriter.WriteStartElement("Price", "");
                        xmlWriter.WriteString(TxtBoxPrice.Text);
                        xmlWriter.WriteEndElement();
                        xmlWriter.WriteEndDocument();
                        xmlWriter.Flush();
                        //do i need?
                        xmlWriter.Close();

我收到这个错误

- $exception
{System.InvalidOperationException: There is an error in XML document (1, 2). ---> System.InvalidOperationException: <GasInfoEntries xmlns=''> was not expected.
    at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReaderList1.Read3_ArrayOfGasInfoEntries()
    --- End of inner exception stack trace ---
   at System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String encodingStyle, Object events)
    at System.Xml.Serialization.XmlSerializer.Deserialize(Stream stream)
    at LP_Buddy.MainPage.btnShow_Click(Object sender, RoutedEventArgs e)}
System.Exception {System.InvalidOperationException}

有什么想法吗？

感谢

错误“<；节点名称>；没有预料到“；使用XmlWriter创建XML时

您缺少XML文档中所需的根XML元素。只需这样添加：

<GasRoot>
    <GasInfoEntries>
      <Gallons>123</Gallons>
      <Price>456</Price>
    </GasInfoEntries>
    <GasInfoEntries>
      <Gallons>123</Gallons>
      <Price>456</Price>
    </GasInfoEntries>
</GasRoot>
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