late binding, InvokeMember managed C++

[IndikaNiva]

Hi I am trying to load a c# dll at runtime and call a method in it from managed C++, I am not having much luck

I am trying t use

Assembly::LoadFrom and
System::Type^ typ
typ->InvokeMember

methods.

anyone have sample code in managed C++.

Urgent. Please and thank you.

Indika

[Marc G]

[ moved thread ]

[Eri523]

This works for me (using VC++ 2010 Express):

// TestDLL.h

#pragma once

using namespace System;

namespace TestDLL {

public ref class Class1
{
public:
  static void SayHello();
};

}

// TestDLL.cpp

#include "stdafx.h"

#include "TestDLL.h"

using namespace TestDLL;

void Class1::SayHello()
{
  Console::WriteLine("Hello from the DLL!");
}

// MCppDllTest.cpp: Hauptprojektdatei.

#include "stdafx.h"

using namespace System;
using namespace System::Reflection;

int main(array<System::String ^> ^args)
{
#ifdef _DEBUG
  String ^strDllName = "..\\Debug\\TestDLL.dll";
#else
  String ^strDllName = "..\\Release\\TestDLL.dll";
#endif
  Console::WriteLine("Hello World from the main app");
  Assembly ^ably = Assembly::LoadFrom(strDllName);
  Type ^cls = ably->GetType("TestDLL.Class1");
  cls->InvokeMember("SayHello", BindingFlags::Static | BindingFlags::Public | BindingFlags::InvokeMethod,
    nullptr, nullptr, nullptr);
  Console::WriteLine("Back in the main app");
  Console::ReadLine();
  return 0;
}

Does this model your scenario, more or less? Ok, the DLL is C++/CLI here because I don't have C# installed, but I suspect the invoking part to be the problematic one anyway. If your scenario differs significantly in any aspect (except the C#), please let me know. And a more detailed description of the problem than "I am not having much luck" would have been helpful, of course.

It took me some time to put that together, including lots of debugging. But now this one works. I'm relatively sure, however, that I had it this way before and it did not work. But never mind, now...

[IndikaNiva]

Thanks... yes that will do the trick. I had already fixed with similar code as yours.