Create Out-Of-Process COM in C#/.Net?

Question

I need to create an out-of-process COM server (.exe) in C# that will be accessed by multiple other processes on the same box. The component has to be a single process becaus

Answer 1

It could be done using umanaged ATL framework and plumbing it with the managed code (simple by changing the result project properties to /clr).

Here are illustrative snippets:

.H-part:

\#include < vcclr.h >

\#using < MyCSharpModule.dll >

using namespace System;

class ATL_NO_VTABLE MyCSharpProxyServer :
    public CComObjectRootEx< CComMultiThreadModel >,

.....

{

      HRESULT FinalConstruct();

      STDMETHODIMP LoadMyFile(BSTR FileName);
.....
      gcroot m_CSClass;

}

.CPP-part:

using namespace System::Collections;

using namespace MyCSNamespace;

HRESULT MyCSharpProxyServer::FinalConstruct()
{

    m_CSClass = gcnew MyCSharpClass();

}

STDMETHODIMP MyCSharpProxyServer::LoadMyFile(BSTR FileName)
{

    try {
       int hr = m_CSClass->LoadFile(gcnew String( FileName));
        return hr;
    }
    catch( Exception^ e )  {
        return E_FAIL;
    }
}

The C# part (MyCSharpClass class) lives in a separate project with output type Class Library.