Xml 方法调用失败，因为[System.String]不包含名为'；追加儿童'；

突然间，这个代码不再工作了。我试图用谷歌搜索这个问题，但我似乎找不到任何解决办法来解决这个问题

我不能这么做

[xml]($deploymentXml.configuration.services).AppendChild($newService)

或

有人知道这是怎么回事吗？为什么这不管用了

---

deployment.xml

<?xml version="1.0" encoding="utf-8"?>
<configuration description="Services deployment server">
    <services>
    </services>
</configuration>

---

在获取XML内容之前，请尝试添加以下内容：

$deploymentFile = $PSScriptRoot + "\USB\Configuration\Deployment.xml";
[System.Xml.XmlDocument]$deploymentXml = New-Object System.Xml.XmlDocument
$deploymentXml = [xml](Get-Content $deploymentFile);

---

在某些环境中，我遇到了一些类型未设置的问题，例如-SQL作业PowerShell步骤。

这就解决了它！你有这方面的文件吗？我不知道我应该把它看作一个数组。

#Location of the file
$deploymentFile = $PSScriptRoot + "\USB\Configuration\Deployment.xml";
$deploymentXml = [xml](Get-Content $deploymentFile);

# check if we got a file, if not do nothing.
if ($deploymentXml) {
    Write-Verbose "deployment xml: $deploymentFile"

    foreach($service in $Services) {
        # Create the new service
        $newService = $deploymentXml.CreateElement("service");
        $deploymentXml.configuration.services.AppendChild($newService)

        Write-Verbose "Adding service: $service"

        $newService.SetAttribute("name", $service);   
    }

    $deploymentXml.Save($deploymentFile);
}

$deploymentFile = $PSScriptRoot + "\USB\Configuration\Deployment.xml";
[System.Xml.XmlDocument]$deploymentXml = New-Object System.Xml.XmlDocument
$deploymentXml = [xml](Get-Content $deploymentFile);