<?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>

那些带有问号的顶级3个节点是什么？我如何在C#中创建它们？

到目前为止我有这个：

XmlDocument xmldoc;
  XmlDeclaration xmlDeclaration;

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

这适用于顶级的XML声明节点,但如何创建接下来的两个？

提前致谢 ：)