Unable To Get PowerShell Output

Question

I have searched the web & this forum in vain attempting to learn how to access the output of this PowerShell script using c#.

Below is the code - notice the failing script.

Any help will be much appreciated.  TIA, Joe

private void LoadList(string server, List<SERVICE> list)
            {
            list.Clear();
            using (var ps = PowerShell.Create())
                {
                // script below works fine
                //ps.AddScript("Get-Service -ComputerName" + " " + server);

                // script below fails with error "object reference not set to instance of an object
                ps.AddScript("get-wmiobject win32_service | format-list Name, Description, State, DisplayName ");

                var results = ps.Invoke();
                                   
                foreach (PSObject obj in results)
                    {
                    SERVICE s = new SERVICE();
                    s.Name = obj.BaseObject.ToString();

                    s.Name = obj.Members["Name"].Value.ToString();
                    s.Status = obj.Members["Status"].Value.ToString();
                    s.DName = obj.Members["DisplayName"].Value.ToString();
                    s.Found = false;
                    list.Add(s);
                    }  // end of foreach st'mt

                 }  // end of using st'mt

         }  // end of method

  

Answer 1

Try the next command:

   ps.AddScript( "get-wmiobject win32_service | Select Name, Description, Status, DisplayName " );

Answer 2

I'm not sure what you are suggesting.

The script you posted is the script that fails as noted in the code.

Answer 3

Change the command.

This works for me :

using (var ps = PowerShell.Create())
{
    ps.AddScript("get-wmiobject win32_service | Select Name, Description, Status, DisplayName");
    Collection<PSObject> results = ps.Invoke();
    foreach (PSObject obj in results)
    {
        Console.WriteLine("Name : {0}", obj.Members["Name"].Value.ToString());
        Console.WriteLine("DisplayName : {0}", obj.Members["DisplayName"].Value.ToString());
        Console.WriteLine("Status : {0}\n", obj.Members["Status"].Value.ToString());                    
    }
}

Answer 4

Now I see the difference - duh! The script uses Select vs Format-list. With Select, it works fine for me now. This definitely solved my problem. Thanks, Joe