C# Invoke Powershell with pre-created object

Question

I've just started out with PS and are writing some C# classes which I need to test from within PS.

Please note that these classes are NOT CmdLets.

I want to do something like this:

var myCustomObj = new CustomObj { Message = "Hello world" };

var ps = Powershell.Create();

ps.AddCommand("Import-Module").AddParameter("Assembly", "MyCustomAsm");
ps.AddCommand("myCustomObj.Run()").AddParameter(myCustomObj);

foreach(string str in ps.AddCommand("Out-String").Invoke<string>()) 
        Console.WriteLine(str);

Where I invoke Run() on the object handed to PS, the result would be a printout "Hello world".

But i'm not even sure that this is possible (might be for security reasons).

I figure I've got 2 options:

Either this is possible. If so please help me :) ?
I will have to generate the script file based on my existing object and the do an "AddScript(...)" to have ps execute it.

Any pointers to get me started would be nice :).

Kind regards.

Christian Mikkelsen · Accepted Answer · 2011-11-05 15:19:19Z

3

I found a solution:

        var objs= new PSDataCollection<CustomObj> {obj};

        using (var ps = PowerShell.Create())
        {
            ps.Runspace.SessionStateProxy.SetVariable("objList", objs);
            ps.AddScript(@"$objList| ForEach { $_.Run()}");
            ps.AddCommand("Out-String");
            var output = ps.Invoke();

            var stringBuilder = new StringBuilder();
            foreach (var obj in output)
            {
                stringBuilder.AppendLine(obj.ToString());
            }

            var result = stringBuilder.ToString().Trim();

            //Evaluate result.
        }

answered Nov 5, 2011 at 15:19

Christian Mikkelsen

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