Convert .Net ManagementBaseObject to ManagementObject

Question

I am trying to use the following code to write out all processes started on a computer. My problem is that the EventArrived method is passed a EventArrivedEventArgs which has a NewEvent property of type ManagementBaseObject. This does not have a InvokeMethod method. Can I convert the NewEvent property to a ManagementObject some how, or do I need to requery and create a ManagementObject? The code below works great, but would like to not requery.

Imports System.Management

Public NotInheritable Class EntryPoint

    Public Shared Sub Main(ByVal args() As String)

        Dim scope As New ManagementScope("\\.\root\cimV2")
        Dim query As New WqlEventQuery("__InstanceCreationEvent", TimeSpan.FromSeconds(1), "TargetInstance isa ""Win32_Process""")

        Using watcher As New ManagementEventWatcher(scope, query)
            AddHandler watcher.EventArrived, AddressOf EventArrived
            watcher.Start()
            Console.WriteLine("Waiting for processes to start...")
            Console.ReadLine()
            watcher.Stop()
        End Using

    End Sub

    Private Shared Sub EventArrived(ByVal sender As Object, ByVal e As EventArrivedEventArgs)

        Dim targetInstance As ManagementBaseObject = e.NewEvent("TargetInstance")
        Dim process As New ManagementObject("win32_process.handle=" + targetInstance("ProcessId").ToString())
        Dim output(1) As String
        process.InvokeMethod("GetOwner", output)
        Console.WriteLine("Process {0} started by {2}\{1}", targetInstance("Name"), output(0), output(1))

    End Sub

End Class

Answer 1

IS the object a ManagementObject instance? The indexer may pass the return value as a Base because it's a general-purpose property. Try this:

Private Shared Sub EventArrived(ByVal sender As Object, ByVal e As EventArrivedEventArgs)
    Dim targetInstance As ManagementBaseObject = e.NewEvent("TargetInstance")

    If TypeOf targetInstance Is ManagementObject Then
        Dim mo as ManagementObject = DirectCast(targetInstance, ManagementObject)
        Dim output(1) as String

        mo.InvokeMethod("GetOwner", output)

        Console.WriteLine("Process {0} started by {2}\{1}", targetInstance("Name"), output(0), output(1))
    End If
End Sub