C# program using DLL from c++

The goal of the project is to developt a minimalistic c# software, which uses DLL libraries to operate. The DLL libraries are written in C++ and need to be integrated into the C# program. You task will be to create a very simple application using a hello world response from a c/c++ programm (Example see here: [login to view URL]) It would be great, if you have enough experience in writing C# projects in Visual Studio, and can create a reusable C#-project file. If everything goes well, the next steps will be to build a simple software to load a video and to pass every frame to the C++ module and to receive some data back. Important: When you submit a bid, please write about your experience with C# programming and how many hours you would need for this task. Thank you very much for your submission!