将旧的C ++ DLL转换为C＃

Question

I have a C# project that requires me to use an SDK written in C++. I have gotten a little unfamiliar with C++ but I managed to find all the important functions and classes that I will need.

From what I learned, I guess C++/CLR is going to be my best bet.

The SDK itself mostly uses a DLL called "VssSDK.dll" that comes with multiple header files.

It's 2018 so I am hoping that there exists some way of converting that very large DLL into something I can use in my .NET application without spending 10s of hours creating headers and what not using CLR (is this what they mean by creating a wrapper?).

I want this thread to be useful for anyone that needs to undertake the same task: Importing old DLLs into a C# project.

Any guideline and information will be helpful.

• SDK compiles on visual studio 2010
• VssSdk.ddl is a shared library
• I need to re-use the classes contained inside of VssSdk.dll
• Needs to be compatible with .NET using 4.6.2 framework
• Hundreds of functions and classes needed from VssSdk.dll
• I have not managed to migrate the SDK demo into VS2017

Answer 1

To use a native method from a native dll, you need to declare it using DllImport attribute and extern keyword. You may see extern documentation here .

To use classes and class methods you should create a wrapper dll first (to transform class methods to functions that takes a first parameter as pointer to an object of the class). You may use the Wrappit tool.

I hope this is helpful.