你可以从C DLL调用C＃DLL吗？ [英] Can you call a C# DLL from a C DLL?

问题描述

我已经在C＃中构建了一个DLL。现在，我想使用 R环境调用该DLL中的函数。 R环境支持调用非托管C / C ++ DLL，但不支持.NET DLL。所以我的问题是，可以从C / C ++ DLL调用C＃DLL中的函数吗？如果是这样，你有没有链接到有关如何做的信息？

解决方案

最直接的方式是将C＃DLL中的一个C＃类公开为COM对象，然后从C / C ++ DLL中创建一个实例。如果这不是可接受的选项，您需要创建一个混合模式的C ++ DLL（其中包含托管和非托管代码）。您的C / C ++ DLL可以调用混合模式DLL中的导出函数，这可以将调用转移到C＃类。

I've built a DLL in C#. Now I want to use the R Environment to call functions in that DLL. The R environment supports calling unmanaged C/C++ DLL's but not into .NET DLL's. So my question is, can I call functions in a C# DLL from a C/C++ DLL? If so, do you have a link to info about how to do this?

解决方案

The most straight forward way of doing this is to expose one of the C# classes in your C# DLL as a COM object, and then create an instance of it from your C/C++ DLL. If that isn't an acceptable option, you'd need to create a mixed-mode C++ DLL (which contains both managed and unmanaged code). Your C/C++ DLL can call exported functions in your mixed-mode DLL, which can in turn forward the calls on to your C# class.

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