Runspace01 (VB.NET) Code Sample

Here are the code samples for the runspace described in Creating a Console Application That Runs a Specified Command. To do this, the application invokes a runspace, and then invokes a command. (Note that this application does not specify runspace configuration information, nor does it explicitly create a pipeline.) The command that is invoked is the Get-Process cmdlet.

Code Sample

Imports System
Imports System.Collections.Generic
Imports System.Text
Imports System.Management.Automation
Imports System.Management.Automation.Host
Imports System.Management.Automation.Runspaces

Namespace Microsoft.Samples.PowerShell.Runspaces

    Module Runspace01
        ' <summary>
        ' This sample uses the RunspaceInvoke class to execute
        ' the get-process cmdlet synchronously. The name and
        ' handlecount are then extracted from  the PSObjects
        ' returned and displayed.
        ' </summary>
        ' <param name="args">Unused</param>
        ' <remarks>
        ' This sample demonstrates the following:
        ' 1. Creating an instance of the RunspaceInvoke class.
        ' 2. Using this instance to invoke a PowerShell command.
        ' 3. Using PSObject to extract properties from the objects
        '    returned by this command.
        ' </remarks>
        Sub Main()
            ' Create an instance of the RunspaceInvoke class.
            ' This takes care of all building all of the other
            ' data structures needed...
            Dim invoker As RunspaceInvoke = New RunspaceInvoke()

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

            ' Now invoke the runspace and display the objects that are
            ' returned...
            For Each result As PSObject In invoker.Invoke("get-process")
                Console.WriteLine("{0,-20} {1}", _
                    result.Members("ProcessName").Value, _
                    result.Members("HandleCount").Value)
            Next
            System.Console.WriteLine("Hit any key to exit...")
            System.Console.ReadKey()
        End Sub
    End Module
End Namespace

See Also

Windows PowerShell SDK