来自不同文件的Powershell XML导入节点

profile.xml的内容：

<files>
  <file folder="CaptureServer" filename="CSConfig" object="CSConfig">
    <Profile name="BBH1200Kofax">
      <OutputCache>\</OutputCache>
      <EncryptedConnectionString>564rgr=</EncryptedConnectionString>
      <ConvertDocsBeforeRelease>false</ConvertDocsBeforeRelease>
    </Profile>
  </file>
  <file folder="CaptureServices3" filename="CSConfig" object="CSConfig">
    <Profile name="BBH1200Kofax">
      <ReleaseToEnterprise>true</ReleaseToEnterprise>
      <CaptureServerUrl />
      <OutputCache />
      <Credentials>
        <EncryptedPassword>46s4rg=</EncryptedPassword>
        <UserName />
        <Domain />
      </Credentials>
      <ConvertDocsBeforeRelease>false</ConvertDocsBeforeRelease>
    </Profile>
  </file>
</files>

---

您已经非常接近了，但ImportNode只创建了一个副本，实际上并没有将复制的节点插入到文档中。试试这个：

$newNode = $newxml.ImportNode($xml.get_DocumentElement(), $true)
$newxml.DocumentElement.AppendChild($newNode)
$xml.Save("$pwd\profile.xml")  

1.xml的内容

<files><file>123</file><file>456</file><br></files>

这对我来说很好

$newNode = $newxml.ImportNode($xml.get_DocumentElement(), $true)
$newxml.DocumentElement.AppendChild($newNode)
$xml.Save("$pwd\profile.xml")  

<files><file>123</file><file>456</file><br></files>

<file>789</file>

$oXML = [xml](Get-Content "1.xml")
$oNewXml = [xml](Get-Content "2.xml")
$oNewNode = $oXML.ImportNode($oNewXml.get_DocumentElement(), $true)
$oXML.DocumentElement.AppendChild($oNewNode)
$oXML.Save("3.xml")