尝试使用Powershell更改XML文件中的值

Question

I have an XML file that I need to programmatically change with Powershell. I have searched throughout this site and Google, and none of the answers I've found have worked.

The XML looks like this:

<Terminal>
    <ID>13</ID>
    <TerminalType>0</TerminalType>
    <Name>T13 TA BAR     </Name>
    <StoreID>1</StoreID>
    <IPAddress>10.10.10.101</IPAddress>
    <SubnetMask>255.255.255.0</SubnetMask>
    <DHCP>false</DHCP>
    <Workgroup>*NONE</Workgroup>
    <CreateBootDrvShare>true</CreateBootDrvShare>
    <TimeZone>Eastern Standard Time</TimeZone>
    <DaylightSavings>true</DaylightSavings>
    <TerminalReload>true</TerminalReload>  
    <NumTerms>-1</NumTerms>
    <Status>1</Status>
    <EnableVNC>false</EnableVNC>
    <StandaloneInterfaceServer>false</StandaloneInterfaceServer>
    <AKTerminalPrefix>-1</AKTerminalPrefix>
    <AKUseTouch>false</AKUseTouch>
</Terminal>

There will be a number of these blocks within the XML document, one for each "computer" being used. I need to be able to change the IP address based on the ID of terminal. How would I go about this?

I tried the following, which did not work:

$xml = [xml](Get-Content $file)
$xml.SelectNodes("//Terminal")

Also:

$xml.Terminal | Where-Object {$_.Terminal.ID -eq '1' } | Select-Object IPAddress

Which also did not work.

If say the ID of the "computer" is 5, I want the IP address to be:

<IPAddress>10.10.10.105</IPAddress>

Any help would be appreciated.

Thanks

Answer 1

One of your examples is really close to working. You can just do the following:

$XMLOutputFile = "Path\file.xml"
$xml = [xml](Get-Content $file)    
($xml.Terminal | Where-Object {$_.ID -eq '5' }).IPAddress = '10.10.10.105'
$xml.Save($XMLOutputFile)

Once you have an XML object (using the [xml] type accelerator in this case), you can just update properties using the $object.property = value syntax. Then all that is left is handling the output. .Save() saves the XML document to file.