[英]Complex Xml namespaces in c#
我正在尝试在c#中创建具有多个名称空间的xml。 我正在使用LINQ XDocument对象创建xml。 xml的多个名称空间引起了很多混乱。 任何人都可以在正确的方向上帮助我。
<?xml version="1.0" encoding="UTF-8"?>
<n1:Form109495CTransmittalUpstream
xmlns="urn:us:gov:treasury:irs:ext:aca:air:6.2" xmlns:irs="urn:us:gov:treasury:irs:common"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:n1="urn:us:gov:treasury:irs:msg:form1094-1095Ctransmitterupstreammessage"
xsi:schemaLocation="urn:us:gov:treasury:irs:msg:form1094-1095Ctransmitterupstreammessage IRS-Form1094-1095CTransmitterUpstreamMessage.xsd">
<Form1094CUpstreamDetail recordType="String" lineNum="0">
<SubmissionId>1</SubmissionId>
<irs:TaxYr>1000</irs:TaxYr>
<irs:CorrectedInd>true</irs:CorrectedInd>
</Form1094CUpstreamDetail>
</n1:Form109495CTransmittalUpstream>
C#代码
new XDocument(
new XAttribute(XNamespace.Xmlns + "version", "1.0"),
new XAttribute(XNamespace.Xmlns + "encoding", "UTF-8"),
new XElement("n1:Form109495CTransmittalUpstream","")
).Save("sample.xml");
您可能已经知道,XML中的“限定名称”由名称空间和本地名称组成。 为了使其更易于处理,您可以在名称空间声明之前添加这些名称空间。
因此,例如,在看到irs:TaxYr
,限定名称实际上由urn:us:gov:treasury:irs:common
命名空间和TaxYr
本地名称组成。
前缀值本身并不重要-它们只是一种查找机制。 LINQ to XML将自动为您处理此问题(通过生成唯一的前缀,通常是p1
, p2
等),但是您可以自己将它们包括为属性。 要为irs
名称空间创建这样的声明,您可以创建以下属性:
new XAttribute(XNamespace.Xmlns + "irs", "urn:us:gov:treasury:irs:common")
LINQ to XML还提供了一些巧妙的隐式转换,使您可以从字符串隐式创建XNamespace
和限定的XName
。 因此,要获取TaxYr
名称,请执行以下操作:
XNamespace irs = "urn:us:gov:treasury:irs:common";
XName taxYr = irs + "TaxYr";
对于您的每个元素和属性,一直如此,可以声明性地创建XML,如下所示:
XNamespace def = "urn:us:gov:treasury:irs:ext:aca:air:6.2";
XNamespace irs = "urn:us:gov:treasury:irs:common";
XNamespace n1 = "urn:us:gov:treasury:irs:msg:form1094-1095Ctransmitterupstreammessage";
XNamespace xsi = "http://www.w3.org/2001/XMLSchema-instance";
var schemaHint = "urn:us:gov:treasury:irs:msg:form1094-1095Ctransmitterupstreammessage IRS-Form1094-1095CTransmitterUpstreamMessage.xsd";
var doc = new XDocument(
new XElement(n1 + "Form109495CTransmittalUpstream",
new XAttribute("xmlns", def),
new XAttribute(XNamespace.Xmlns + "irs", irs),
new XAttribute(XNamespace.Xmlns + "xsi", xsi),
new XAttribute(XNamespace.Xmlns + "n1", n1),
new XAttribute(xsi + "schemaLocation", schemaHint),
new XElement(def + "Form1094CUpstreamDetail",
new XAttribute("recordType", "String"),
new XAttribute("lineNum", 0),
new XElement(def + "SubmissionId", 1),
new XElement(irs + "TaxYr", 1000),
new XElement(irs + "CorrectedInd", true)
)
)
);
这是我通常的做法
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.Xml.Linq;
using System.Data;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
string xml =
"<?xml version=\"1.0\" encoding=\"UTF-8\"?>" +
"<n1:Form109495CTransmittalUpstream" +
" xmlns=\"urn:us:gov:treasury:irs:ext:aca:air:6.2\" xmlns:irs=\"urn:us:gov:treasury:irs:common\"" +
" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"" +
" xmlns:n1=\"urn:us:gov:treasury:irs:msg:form1094-1095Ctransmitterupstreammessage\"" +
" xsi:schemaLocation=\"urn:us:gov:treasury:irs:msg:form1094-1095Ctransmitterupstreammessage IRS-Form1094-1095CTransmitterUpstreamMessage.xsd\">" +
"</n1:Form109495CTransmittalUpstream>";
XDocument doc = XDocument.Parse(xml);
XElement form109495CTransmittalUpstream = (XElement)doc.FirstNode;
XNamespace def = form109495CTransmittalUpstream.GetDefaultNamespace();
XNamespace irs = form109495CTransmittalUpstream.GetNamespaceOfPrefix("irs");
XNamespace n1 = form109495CTransmittalUpstream.GetNamespaceOfPrefix("n1");
XElement form1094CUpstreamDetail = new XElement(def + "Form1094CUpstreamDetail", new XAttribute[] {
new XAttribute("recordType", "String"), new XAttribute("lineNum", 0)
});
form109495CTransmittalUpstream.Add(form1094CUpstreamDetail);
form109495CTransmittalUpstream.Add(new XElement("SubmissionId", 1));
form109495CTransmittalUpstream.Add(new XElement(irs + "TaxYr", 1000));
form109495CTransmittalUpstream.Add(new XElement(irs + "CorrectedInd", true));
}
}
}
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