我如何解析Powershell中的XML以从最后一个模块中选择项目

Question

I need to select the max count and count to do a calculation in PowerShell.

Here is the xml example:

<Para TimeStamp="1497627698"
       Signature="6D09881827E0973">
    <License Module="page"
           ServerId="1452"
           EnterBy="20110630"
           RenewDate="20170701"
           RenewPeriod="Year"
           MaxNumWorkflowServers="1"
           MaxVersion="3.0"
           MaxNumExportFields="10"
           TableRecognition="FALSE"
           DisabledOn="20170613">
        <Counter Name="Pages"
             MaxCount="7500"
             Count="7500"/>
    </License>
    <License Module="page"
           ServerId="1452"
           EnterBy="20170613"
           RenewDate="20170701"
           RenewPeriod="Year"
           MaxNumWorkflowServers="1"
           MaxVersion="3.0"
           MaxNumExportFields="10"
           TableRecognition="FALSE"
           ValidUntil="20170620">
        <Counter Name="Pages"
             MaxCount="8000"
             Count="7613"/>
    </License>
</Para>

Answer 1

Try This:

    [xml]$xml = '
<Para TimeStamp="1497627698"
       Signature="6D09881827E0973">
    <License Module="page"
           ServerId="1452"
           EnterBy="20110630"
           RenewDate="20170701"
           RenewPeriod="Year"
           MaxNumWorkflowServers="1"
           MaxVersion="3.0"
           MaxNumExportFields="10"
           TableRecognition="FALSE"
           DisabledOn="20170613">
        <Counter Name="Pages"
             MaxCount="7500"
             Count="7500"/>
    </License>
    <License Module="page"
           ServerId="1452"
           EnterBy="20170613"
           RenewDate="20170701"
           RenewPeriod="Year"
           MaxNumWorkflowServers="1"
           MaxVersion="3.0"
           MaxNumExportFields="10"
           TableRecognition="FALSE"
           ValidUntil="20170620">
        <Counter Name="Pages"
             MaxCount="8000"
             Count="7613"/>
    </License>
</Para>
'

Then execute: $xml.Para.License.Counter.MaxCount in your Powershell prompt. That will give you the values for all the max count elements in your xml. You can specify variables for whatever elements you want to operate against after that.

Optionally, if your XML is a file, you can import the file into the $xml variable using [xml]$xml = Get-Content [path_to_your_file]