Mastering Windows PowerShell Scripting - Second Edition

Schema validation

XML documents that reference a schema can be validated.

PowerShell itself comes with a number of XML files with associated schemas in the help files. For example, the help file for ISE is available:

PS>Get-Item $pshome\modules\ISE\en-US\ISE-help.xml 
 
    Directory: C:\Windows\System32\WindowsPowerShell\v1.0\modules\ISE\en-US 
 
Mode                LastWriteTime         Length Name                                                                 
----                -------------         ------ ----                                                                 
-a----         29/11/16     07:57          33969 ISE-help.xml         

The schema documents used by the help content are saved in $pshome\Schemas\PSMaml.

The following snippet may be used to load the schema files and then test the content of the document:

$path = Resolve-Path "$pshome\modules\ISE\en-US\*-help.xml" [Xml]$document = Get-Content $path -Raw $document.Schemas.Add( ...