Runspace03-codevoorbeeld (C#)

Hier is de C#-broncode voor de consoletoepassing die wordt beschreven in 'Creating a Console Application That Runs a Specified Script'. In dit voorbeeld wordt de klasse System.Management.Automation.Runspaceinvoke gebruikt om een script uit te voeren dat procesgegevens op haalt met behulp van de lijst met procesnamen die in het script worden doorgegeven. U ziet hoe u invoerobjecten kunt doorgeven aan een script en hoe u foutobjecten en de uitvoerobjecten kunt ophalen.

Notitie

U kunt het C#-bronbestand (runspace03.cs) voor dit voorbeeld downloaden met behulp van de Microsoft Windows Software Development Kit voor Windows Vista en Microsoft .NET Framework 3.0 Runtime Components. Zie How to Install Windows PowerShell and Download the Windows PowerShell SDK voor downloadinstructies. De gedownloade bronbestanden zijn beschikbaar in de <PowerShell Samples> map .

Codevoorbeeld

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 uses the PowerShell class to execute
        /// a script that retrieves process information for the
        /// list of process names passed into 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 an instance of the PowerSHell class.
        /// 2. Using this instance to execute a string as a PowerShell script.
        /// 3. Passing input objects to the script from the calling program.
        /// 4. Using PSObject to extract and display properties from the objects
        ///    returned by this command.
        /// 5. Retrieving and displaying error records that were generated
        ///    during the execution of that script.
        /// </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 an instance of the PowerShell class.
            using (PowerShell powershell = PowerShell.Create())
            {
                powershell.AddScript(script);

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

                // Now invoke the PowerShell and display 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);
                }

                // Now 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();
        }
    }
}

Zie ook

Handleiding voor Windows PowerShell-programmeurs

Windows PowerShell SDK