C# 需要使用xmltextWriter在C中编写XML起始元素的帮助吗

我这样写代码

  XmlDocument xdocMulticom = new XmlDocument();
  StringWriter strwMultiXml = new StringWriter();
  XmlTextWriter xmlMultiAirInfo = new XmlTextWriter(strwMultiXml);
  xmlMultiAirInfo.Formatting = Formatting.None;

  xmlMultiAirInfo.WriteStartDocument();
  xmlMultiAirInfo.WriteStartElement("ns", "cancelreservation", "http://www.opentravel.org/ota/2003/05");
  xmlMultiAirInfo.WriteStartElement("OTA_VehCancelRQ");
  xmlMultiAirInfo.WriteAttributeString("xmlns", "http://www.opentravel.org/ota/2003/05");
  xmlMultiAirInfo.WriteAttributeString("xmlns", "xsi", null, "http://www.w3.org/2001/XMLSchema-instance");
  xmlMultiAirInfo.WriteAttributeString("Version", "1.002");
  xmlMultiAirInfo.WriteAttributeString("PrimaryLangID", "EN");
  xmlMultiAirInfo.WriteAttributeString("ReqRespVersion", "2.001");
  xmlMultiAirInfo.WriteStartElement("POS");
  xmlMultiAirInfo.WriteStartElement("Source");
  xmlMultiAirInfo.WriteStartElement("RequestorID");
  xmlMultiAirInfo.WriteAttributeString("Type", "4");
  xmlMultiAirInfo.WriteAttributeString("ID", "F0F4CCE4A9C24355");
  xmlMultiAirInfo.WriteEndElement();
  xmlMultiAirInfo.WriteEndElement();
  xmlMultiAirInfo.WriteEndElement();
  xmlMultiAirInfo.WriteStartElement("VehCancelRQCore");
  xmlMultiAirInfo.WriteAttributeString("CancelType", "Cancel");
  xmlMultiAirInfo.WriteStartElement("UniqueID");
  xmlMultiAirInfo.WriteAttributeString("Type", "14");
  xmlMultiAirInfo.WriteAttributeString("ID", "N2169641");
  xmlMultiAirInfo.WriteStartElement("PersonName");
  xmlMultiAirInfo.WriteElementString("GivenName", "Sandra");
  xmlMultiAirInfo.WriteElementString("Surname", "Jhonsan");
  xmlMultiAirInfo.WriteEndElement();
  xmlMultiAirInfo.WriteEndElement();                         
  xmlMultiAirInfo.WriteEndElement();
  xmlMultiAirInfo.WriteStartElement("VehCancelRQInfo");
  xmlMultiAirInfo.WriteStartElement("Vendor");
  xmlMultiAirInfo.WriteAttributeString("Code", "ZR");
  xmlMultiAirInfo.WriteEndElement();                          
  xmlMultiAirInfo.WriteEndElement();
  xmlMultiAirInfo.WriteEndElement();
  xmlMultiAirInfo.WriteEndElement();
  xdocMulticom.LoadXml(strwMultiXml.ToString());

它生成如下输出：

<?xml version="1.0" encoding="utf-16"?>
<ns:cancelreservation xmlns:ns="http://www.opentravel.org/ota/2003/05">
  <OTA_VehCancelRQ xmlns="http://www.opentravel.org/ota/2003/05" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" Version="1.002" PrimaryLangID="EN" ReqRespVersion="2.001">
    <POS>
      <Source>
        <RequestorID Type="4" ID="F0F4CCE4A9C24355" />
      </Source>
    </POS>
    <VehCancelRQCore CancelType="Cancel">
      <UniqueID Type="14" ID="N2169641">
        <PersonName>
          <GivenName>Sandra</GivenName>
          <Surname>Jhonsan</Surname>
        </PersonName>
      </UniqueID>
    </VehCancelRQCore>
    <VehCancelRQInfo>
      <Vendor Code="ZR" />
    </VehCancelRQInfo>
  </OTA_VehCancelRQ>
</ns:cancelreservation>

<?xml version="1.0" encoding="utf-16"?>
<ns:cancelreservation>
  <OTA_VehCancelRQ xmlns="http://www.opentravel.org/ota/2003/05" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" Version="1.002" PrimaryLangID="EN" ReqRespVersion="2.001">
    <POS>
      <Source>
        <RequestorID Type="4" ID="F0F4CCE4A9C24355" />
      </Source>
    </POS>
    <VehCancelRQCore CancelType="Cancel">
      <UniqueID Type="14" ID="N2169641">
        <PersonName>
          <GivenName>Sandra</GivenName>
          <Surname>Jhonsan</Surname>
        </PersonName>
      </UniqueID>
    </VehCancelRQCore>
    <VehCancelRQInfo>
      <Vendor Code="ZR" />
    </VehCancelRQInfo>
  </OTA_VehCancelRQ>
</ns:cancelreservation>

这对我来说没关系，但我需要这样：

<?xml version="1.0" encoding="utf-16"?>
<ns:cancelreservation xmlns:ns="http://www.opentravel.org/ota/2003/05">
  <OTA_VehCancelRQ xmlns="http://www.opentravel.org/ota/2003/05" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" Version="1.002" PrimaryLangID="EN" ReqRespVersion="2.001">
    <POS>
      <Source>
        <RequestorID Type="4" ID="F0F4CCE4A9C24355" />
      </Source>
    </POS>
    <VehCancelRQCore CancelType="Cancel">
      <UniqueID Type="14" ID="N2169641">
        <PersonName>
          <GivenName>Sandra</GivenName>
          <Surname>Jhonsan</Surname>
        </PersonName>
      </UniqueID>
    </VehCancelRQCore>
    <VehCancelRQInfo>
      <Vendor Code="ZR" />
    </VehCancelRQInfo>
  </OTA_VehCancelRQ>
</ns:cancelreservation>

<?xml version="1.0" encoding="utf-16"?>
<ns:cancelreservation>
  <OTA_VehCancelRQ xmlns="http://www.opentravel.org/ota/2003/05" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" Version="1.002" PrimaryLangID="EN" ReqRespVersion="2.001">
    <POS>
      <Source>
        <RequestorID Type="4" ID="F0F4CCE4A9C24355" />
      </Source>
    </POS>
    <VehCancelRQCore CancelType="Cancel">
      <UniqueID Type="14" ID="N2169641">
        <PersonName>
          <GivenName>Sandra</GivenName>
          <Surname>Jhonsan</Surname>
        </PersonName>
      </UniqueID>
    </VehCancelRQCore>
    <VehCancelRQInfo>
      <Vendor Code="ZR" />
    </VehCancelRQInfo>
  </OTA_VehCancelRQ>
</ns:cancelreservation>

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有什么办法可以改变它吗？

正如我所看到的，区别只在于第一个节点中的名称空间。。。还是我的错

替换此行：

xmlMultiAirInfo.WriteStartelements，取消预订，http://www.opentravel.org/ota/2003/05; 用这个

xmlMultiAirInfo.WriteStartelements，取消预订；

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嗯，C做得很好。因为您的元素不知道这样的前缀。

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在您的示例中，cancelreservation不是根元素，但如果它是根元素，则必须存在xmlns属性。

是否可以添加一些示例，说明您想要什么和得到什么？现在还不清楚您想问什么。嗨，实际上我需要不带名称空间的根元素，其余的xml都是same@Sandra这将是无效的XML。如果元素名称没有命名空间，则它不能有命名空间前缀。在ns:cancelreservation上使用命名空间声明是否确实会给您带来问题？据我所知，从你对Spawn答案的评论来看，这样应该很好，当你自己生成它时，应该是这样。嗨，是的，这只是差异。但是当我像你一样写作时。它像我一样生成o/p，是的，你是对的。只有你看到的差异。。但它会产生o/p，就像。。。。。这是不可取的，我在麻烦bcz后的第二天tommarow是delevery dayhi..我想创建一个像这样的soap，C做得很好。因为您的元素不知道这样的前缀。在您的示例中，cancelreservation不是根元素，但如果它是根元素，则必须存在xmlns属性。也在回答中编辑。