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How to Invoke Scripts Within a Cmdlet

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This example shows how to invoke a script that is supplied to a cmdlet. The script is executed by the cmdlet, and its results are returned to the cmdlet as a collection of System.Management.Automation.PSObject objects.

To invoke a script block

  1. The command verifies that a script block was supplied to the cmdlet. If a script block was supplied, the command invokes the script block with its required parameters.

    if (script != null)
{
     WriteDebug("Executing script block.");

     // Invoke the script block with the required arguments.
     Collection<PSObject> PSObjects = script.Invoke(
         line,
         simpleMatch,
         caseSensitive
     );
    // more code as needed...
}

  2. Then, the script iterates through the returned collection of System.Management.Automation.PSObject objects and perform the necessary operations.

    foreach (PSObject object in PSObjects)
{
    if (LanguagePrimitives.IsTrue(object))
    {
         result = new MatchInfo();
         result.Line = line;
         result.IgnoreCase = !caseSensitive;
         break;
    }
}

See Also

Writing a Windows PowerShell Cmdlet