在XML中，什么是带有问号称为节点，以及我如何在C＃中添加它们？ [英] In XML, what are the nodes with question marks called, and how do I add them in C#?

问题描述

下面是在InfoPath创建的XML文件的例子：

Here's an example of an XML file created in InfoPath:

  <?xml version="1.0" encoding="UTF-8"?>
  <?mso-infoPathSolution solutionVersion="1.0.0.1" productVersion="12.0.0" PIVersion="1.0.0.0" href="file:///C:\Metastorm\Sample%20Procedures\InfoPath%20samples\Template1.xsn" name="urn:schemas-microsoft-com:office:infopath:Template1:-myXSD-2010-07-21T14-21-13" ?>
  <?mso-application progid="InfoPath.Document" versionProgid="InfoPath.Document.2"?>
  <my:myFields xmlns:my="http://schemas.microsoft.com/office/infopath/2003/myXSD/2010-07-21T14:21:13" xml:lang="en-us">
    <my:field1>hello</my:field1>
    <my:field2>world</my:field2>
  </my:myFields>

什么是与所谓的问号那些顶级3个节点......，我如何在创建它们？C＃

What are those top 3 nodes with the question mark called... and how do I create them in C#?

到目前为止，我有这样的：

So far I have this:

  XmlDocument xmldoc;
  XmlDeclaration xmlDeclaration;

  xmldoc=new XmlDocument();
  xmlDeclaration = xmldoc.CreateNode(XmlNodeType.XmlDeclaration, "", "") as XmlDeclaration;
  xmlDeclaration.Encoding = "UTF-8";
  xmldoc.AppendChild(xmlDeclaration);

这工作正常的顶级XML声明节点，但我怎么创造未来两年？

This works fine for the top XML declaration node , but how do I create the next two?

感谢：）

推荐答案

这些被称为处理指令。使用 XmlDocument.CreateProcessingInstruction 添加他们。

These are called processing instructions. Add 'em using XmlDocument.CreateProcessingInstruction.

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