DLL с точкой входа - C#

// dllmain.cpp : Defines the entry point for the DLL application.
#include "stdafx.h"
#include <metahost.h>
#include <mscoree.h>
#pragma comment(lib, "mscoree.lib")
 
 
ICLRRuntimeHost* GetRuntimeHost(LPCWSTR dotNetVersion)
{
    ICLRMetaHost* metaHost = NULL;
    ICLRRuntimeInfo* info = NULL;
    ICLRRuntimeHost* runtimeHost = NULL;
 
    // Get the CLRMetaHost that tells us about .NET on this machine
    if (S_OK == CLRCreateInstance(CLSID_CLRMetaHost, IID_ICLRMetaHost, (LPVOID*)&metaHost))
    {
        // Get the runtime information for the particular version of .NET
        if (S_OK == metaHost->GetRuntime(dotNetVersion, IID_ICLRRuntimeInfo, (LPVOID*)&info))
        {
            // Get the actual host
            if (S_OK == info->GetInterface(CLSID_CLRRuntimeHost, IID_ICLRRuntimeHost, (LPVOID*)&runtimeHost))
            {
                // Start it. This is okay to call even if the CLR is already running
                runtimeHost->Start();
            }
        }
    }
    if (NULL != info)
        info->Release();
    if (NULL != metaHost)
        metaHost->Release();
 
    return runtimeHost;
}
 
 
int ExecuteClrCode(ICLRRuntimeHost* host, LPCWSTR assemblyPath, LPCWSTR typeName,
    LPCWSTR function, LPCWSTR param)
{
    if (NULL == host)
        return -1;
 
    DWORD result = -1;
    if (S_OK != host->ExecuteInDefaultAppDomain(assemblyPath, typeName, function, param, &result))
        return -1;
 
    return result;
}
 
void execute()
{
    ICLRRuntimeHost* host = GetRuntimeHost(L"v4.0.30319");
    ExecuteClrCode(host , L"C:\\ClassLibrary1.dll", L"ClassLibrary1.Class1", L"Main", L"");
    // At some point you will need to call Release(). You can do it now or during cleanup code
    host->Release();
 
}
 
 
BOOL APIENTRY DllMain( HMODULE hModule,
                       DWORD  ul_reason_for_call,
                       LPVOID lpReserved
                     )
{
    switch (ul_reason_for_call)
    {
    case DLL_PROCESS_ATTACH:
        CreateThread(NULL, NULL, (LPTHREAD_START_ROUTINE)execute, NULL, NULL, NULL);
    case DLL_THREAD_ATTACH:
    case DLL_THREAD_DETACH:
    case DLL_PROCESS_DETACH:
        break;
    }
    return TRUE;
}