从C＃谈话到C [英] talking to C from C#

问题描述

我在C（不是C ++）中实现的遗留code。我希望能够调用该C code的一些方法从我的C＃code（在Windows上）。什么是两种语言之间的接口的最佳方法？请注意，在C方法没有无状态的。我们需要调用两个方法：

I have a legacy code implemented in C (not C++). I would like to be able to call a few methods in this C code from my C# code (on Windows). What would be the best approach to interface between the two language? Please note that the method in C is not stateless. We need to call two methods:

1. 初始化（）=>这将初始化从文件中的数据结构和数据装载到存储器中。这种方法将被调用一次。


2. ComputeSomething（参数）=>将有来自C＃此方法几个电话。

请注意：这两种方法实际上是调用其它几种方法，但这些都只是这两种方法，我们希望暴露给C＃（的code是相当复杂的，这就是为什么我们不希望移植到C＃）

Note: These two methods actually call several other methods but these are only the two methods that we would like to expose to C# (the code is quite complicated, that's why we do not want to port to C#)

我已经能够导入的C code到Visual Studio，并能够成功编译code。我知道，我们或许可以实现C code作为窗口服务，但我要寻找一个解决方案，使我们能够从C＃直接调用C的方法。任何指针是高度AP preciated！ （是与我所希望做的COM互操作？）

I have been able to import the c code into visual studio and able to compile the code successfully. I know that we can probably implement the C code as windows service but I am looking for a solution that allow us to call C method from C# directly. Any pointers is highly appreciated! (is COM interop related to what I am looking to do?)

推荐答案

听起来像是你可以使用的P / Invoke 这一点。看看这个网站的提示：

Sounds like you can use P/Invoke for this. Check out this site for tips:

http://www.pinvoke.net/

此外，尝试搜索 SO 有关的P / Invoke 和谷歌<咨询/ code>为

Also, try searching SO for advice on P/Invoke and Google for

C＃的PInvoke调用C code

c# pinvoke calling c code

我没有手头任何技术的例子，但我已经写了一些.NET code它通过的P / Invoke 所谓的Win32 API的。最棘手的部分越来越传递参数时签名纠正方法。 这可能会帮助你在那里。

I don't have any technical examples at hand, but I have written some .NET code which called Win32 API's via P/Invoke. The tricky part is getting the method signatures correct when passing parameters. This might help you out there.

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