使用LINQ-to-XML API创建XML

Question

我想创建一个XML，它看起来像

<Records FileUniqueId="1234567" Source="CCC">
  <Record InfNumber="122354" AgencyNumber="017"></Record>
  <Record InfNumber="122355" AgencyNumber="018"></Record>
 <Record InfNumber="122356" AgencyNumber="018"></Record>
</Records>
XElement responseXML = new XElement("Records");
                responseXML.SetAttributeValue(BusinessConstants.colFileUniqueID, _fileUniqueId);
                responseXML.SetAttributeValue(BusinessConstants.colSourceName, _sourceName);

                foreach (InfringementEntity ie in iLES.infringementEntities)
                {
                    responseXML.Add(new XElement("Record"));
                    XElement record = responseXML.Element("Record");

                    record.SetAttributeValue(BusinessConstants.colInfringementNumber, ie.infringementNumber);
                    record.SetAttributeValue(BusinessConstants.colIssueAgency, ie.issueAgency);
                }

我使用上面的代码来生成XML，但问题是，当我为记录设置属性时，它每次都会覆盖第一条记录的属性。

所以我得到的XML是：

 <Records FileUniqueId="1234567" Source="CCC">
     <Record InfNumber="122356" AgencyNumber="018"></Record>
      <Record/>
      <Record/>
    </Records>

请帮帮忙。

Answer 1

是的，它覆盖了第一条记录的属性，因为你告诉它-你没有使用你刚刚创建的记录元素。你可以这样做：

foreach (InfringementEntity ie in iLES.infringementEntities)
{
    XElement newRecord = new XElement("Record");
    newRecord.SetAttributeValue(BusinessConstants.colInfringementNumber,
                                ie.infringementNumber);
    newRecord.SetAttributeValue(BusinessConstants.colIssueAgency,
                                responseXML.Add(newRecord);
}

..。但是还有更多惯用的方法，例如：

XElement responseXML = new XElement("Records",
    iLes.infringementEntities.Select(ie => new XElement("Record",
        new XAttribute(BusinessConstants.colInfringementNumber,
                       ie.infringementNumber),
        new XAttribute(BusinessConstants.colIssueAgency, ie.issueAgency))));

这将替换您的整个代码，包括foreach语句。