Running Powershell with CLR in native runtime.

Powerless.cpp

#include <metahost.h>

#pragma comment(lib, "mscoree.lib")

int main(int argc, wchar_t* argv[])
{
	HRESULT hr;
	ICLRMetaHost *pMetaHost = NULL;
	ICLRRuntimeInfo *pRuntimeInfo = NULL;
	ICLRRuntimeHost *pClrRuntimeHost = NULL;

	// build runtime
	hr = CLRCreateInstance(CLSID_CLRMetaHost, IID_PPV_ARGS(&pMetaHost));
	hr = pMetaHost->GetRuntime(L"v4.0.30319", IID_PPV_ARGS(&pRuntimeInfo));
	hr = pRuntimeInfo->GetInterface(CLSID_CLRRuntimeHost,IID_PPV_ARGS(&pClrRuntimeHost));

	// start runtime
	hr = pClrRuntimeHost->Start();

	// execute managed assembly
	DWORD pReturnValue;
	hr = pClrRuntimeHost->ExecuteInDefaultAppDomain(
		L"Powerless\\bin\\Release\\Powerless.dll",
		L"Powerless.Program",
		L"run",
		L"start-process calc;",
		&pReturnValue);

	// free resources
	pMetaHost->Release();
	pRuntimeInfo->Release();
	pClrRuntimeHost->Release();

	return 0;
}

Powerless.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Management.Automation;
using System.Threading;

namespace Powerless
{
    public class Program
    {
        static int run(String pwzArgument)
        {
            using (PowerShell PowerShellInstance = PowerShell.Create())
            {
                PowerShellInstance.AddScript(pwzArgument);
                IAsyncResult result = PowerShellInstance.BeginInvoke();
                while (result.IsCompleted == false)
                {
                    Console.WriteLine("Waiting for pipeline to finish...");
                    Thread.Sleep(1000);
                }
                Console.WriteLine("Finished!");
                Console.ReadKey();
            }
            return 0;
        }
    }
}