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.NET Forum / Languages / C# / June 2007using c++ developed dll in .net
Hi All, i wanted to know how can i use c++ developed in my c# code. I want to use crypto++ library in my c# code. Any pointer would be helpful. Regards, Y Iguchi > i wanted to know how can i use c++ developed in my c# code. > > I want to use crypto++ library in my c# code. Any pointer would be helpful. DllImport exist to use Win32 DLL's in .NET programs. Arne >> i wanted to know how can i use c++ developed in my c# code. >> >> I want to use crypto++ library in my c# code. Any pointer would be >> helpful. Use C++/CLI to call crypto++. Make a library wrapping just the crypto functionality you need, make it into a "ref class", and add it as a project reference from your C# project, and you'll be able to use it just like the Microsoft classes. > DllImport exist to use Win32 DLL's in .NET programs. And you need a C API to do so, not C++. When C++ is exposed as COM/ActiveX, then .NET supports the API that way. But I don't think crypto++ is. > Arne >>> i wanted to know how can i use c++ developed in my c# code. >>> [quoted text clipped - 11 lines] > COM/ActiveX, then .NET supports the API that way. But I don't think > crypto++ is. Why write a C++ wrapper instead of simply calling the code you want to call ? Arne >>>> i wanted to know how can i use c++ developed in my c# code. >>>> [quoted text clipped - 14 lines] > Why write a C++ wrapper instead of simply calling the code > you want to call ? I meant to suggest that the wrapper should be at a higher level of abstraction, providing application-relevant functions. But I can definitely see why you interpreted my suggestion as a thin one-to-one forwarder. > Arne Hi, That is great . I will be using crypto++ with that. I hope i will be use the same with c#. Crypto++ compiles with /Mtd . I hope it will not cause any problem. Are there any limitation in using the existing c++ Code with C# .net Regards, Y Iguchi > >>>> i wanted to know how can i use c++ developed in my c# code. > >>>> [quoted text clipped - 20 lines] > > > Arne Hi Ben, I will be using crypto++ with the c#. I just wanted to confirm one thing 1. Does this method works with /Mtd too. 2. Is this approach has some limitations too. i just wanted to ensure before using this approach. Regards. Y Iguchi > >>>> i wanted to know how can i use c++ developed in my c# code. > >>>> [quoted text clipped - 20 lines] > > > Arne > Hi Ben, > > I will be using crypto++ with the c#. I just wanted to confirm one thing > 1. Does this method works with /Mtd too. No, I think /MD or /MDd is required for C++/CLI to create a .NET assembly. I doubt that will break crypto++. > 2. Is this approach has some limitations too. i just wanted to ensure > before > using this approach. The only limitation is that the code you write using the C++/CLI syntax is only usable in a .NET program, so your customers need .NET installed. And of course not just .NET Framework, but also the updated VC++ runtime (vcredist_x86). Native C++ classes can be used in a .NET program via C++/CLI (not directly from C# or VB) or from native code. This feature is called "C++ interop" or "It Just Works" and is much better than p/invoke for working with native C++ code or any library with C headers. > Regards. > Y Iguchi [quoted text clipped - 25 lines] >> >> > Arne Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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