Esempio di Runspace03

Questo esempio illustra come usare la classe System.Management.Automation.PowerShell per eseguire uno script in modo sincrono e come gestire gli errori non irreversibili. Lo script riceve un elenco di nomi di processo e quindi recupera tali processi. I risultati dello script, inclusi eventuali errori non irreversibili generati durante l'esecuzione dello script, vengono visualizzati in una finestra della console.

Requisiti

Questo esempio richiede Windows PowerShell 2.0.

Dimostra

In questo esempio viene illustrato quanto segue.

Esempio

Questo esempio esegue uno script in modo sincrono nello spazio di esecuzione predefinito fornito da Windows PowerShell. L'output dello script e gli eventuali errori non irreversibili generati vengono visualizzati in una finestra della console.

namespace Microsoft.Samples.PowerShell.Runspaces
{
  using System;
  using System.Collections;
  using System.Management.Automation;
  using System.Management.Automation.Runspaces;
  using PowerShell = System.Management.Automation.PowerShell;

  /// <summary>
  /// This class contains the Main entry point for this host application.
  /// </summary>
  internal class Runspace03
  {
    /// <summary>
    /// This sample shows how to use the PowerShell class to run a
    /// script that retrieves process information for the list of
    /// process names passed to the script. It shows how to pass input
    /// objects to a script and how to retrieve error objects as well
    /// as the output objects.
    /// </summary>
    /// <param name="args">Parameter not used.</param>
    /// <remarks>
    /// This sample demonstrates the following:
    /// 1. Creating a PowerShell object to run a script.
    /// 2. Adding a script to the pipeline of the PowerShell object.
    /// 3. Passing input objects to the script from the calling program.
    /// 4. Running the script synchronously.
    /// 5. Using PSObject objects to extract and display properties from
    ///    the objects returned by the script.
    /// 6. Retrieving and displaying error records that were generated
    ///    when the script was run.
    /// </remarks>
    private static void Main(string[] args)
    {
      // Define a list of processes to look for.
      string[] processNames = new string[]
      {
        "lsass", "nosuchprocess", "services", "nosuchprocess2"
      };

      // The script to run to get these processes. Input passed
      // to the script will be available in the $input variable.
      string script = "$input | Get-Process -Name {$_}";

      // Create a PowerShell object. Creating this object takes care of
      // building all of the other data structures needed to run the script.
      using (PowerShell powershell = PowerShell.Create())
      {
        powershell.AddScript(script);

        Console.WriteLine("Process              HandleCount");
        Console.WriteLine("--------------------------------");

        // Invoke the script synchronously and display the
        // ProcessName and HandleCount properties of the
        // objects that are returned.
        foreach (PSObject result in powershell.Invoke(processNames))
        {
          Console.WriteLine(
                            "{0,-20} {1}",
                            result.Members["ProcessName"].Value,
                            result.Members["HandleCount"].Value);
        }

        // Process any error records that were generated while running
        //  the script.
        Console.WriteLine("\nThe following non-terminating errors occurred:\n");
        PSDataCollection<ErrorRecord> errors = powershell.Streams.Error;
        if (errors != null && errors.Count > 0)
        {
          foreach (ErrorRecord err in errors)
          {
            System.Console.WriteLine("    error: {0}", err.ToString());
          }
        }
      }

      System.Console.WriteLine("\nHit any key to exit...");
      System.Console.ReadKey();
    }
  }
}

Vedere anche

Scrittura di un'applicazione host di Windows PowerShell

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