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Urgent: Help with calls from C++ DLL to C# DLL using COM

I have test MFC application that loads MFC Extension DLL.

This MFC Extension DLL (C++) must call methods in C# DLL using COM, and C# DLL also calls methods in MFC Extension DLL.

This is a proof of concept project and I got it working except one part that makes it unusable. Every time (after the 1st time) that I call C# DLL a new COM object (and C# object) is created instead of getting just the interface of the existing object.

Need urgent help today and tomorrow with this.

You must have reliable Internet connection so that sharing screen over Skype or TeamViewer works fluently. You also must have good English so I won't guess what you say.

Skills: C# Programming, C++ Programming, Software Architecture

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About the Employer:
( 0 reviews ) Sn Diego, United States

Project ID: #15744229

14 freelancers are bidding on average $53/hour for this job

Yknox

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(752 Reviews)
8.9
xiqian88

Hello, How are you today? I am very interesting on your project. I am good with MFC application. Message me for detail discussion. Best Regards

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(38 Reviews)
6.6
Ilyapin

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6.2
kenb080

hello. i am a c++, c# expert for 13 years. i have full experience of c#, c++ programming include com, atl , dll. i can complete this job, will give you a good result. hoping to discuss with you as soon thanks fo More

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(19 Reviews)
5.7
istepin

I might help you. I've done a pretty fair amount of COM-related projects in the past as well as native<->.net interop.

$55 USD / hour
(5 Reviews)
4.9
mike199

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4.2
waqas193

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4.3
mmadi

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gameappstudio

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ahmdmohammed

I can do any type of user interface designing for modern applications and create application projects for the business. - Expertise of C/C++, C#, Windows Runtime, Interfaces and Systems-wide. - Advanced knowledge of More

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0.0
AlexeySokol

Hi, I'm a C++ and C# developer on visual studio 2017, with a lot of experiences in COM interface, and looking forward to discuss with you about the project. Regards, Andy

$55 USD / hour
(1 Review)
0.0
RobertLuoB

ok, i know how to access code from dll with COM interfaces by COM interfaces. i know how to create a new instance , then query COM interfaces, and make calls with methods that exposed to host applications by COM ob More

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(0 Reviews)
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joser1971

Strong C++, .NET and C# background. Very experienced with COM and COM/.NET inter-operability. Out of the box thinker.

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kiran0908

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(0 Reviews)
0.0