C # Calling a function method in an unmanaged dynamic library

C # How to invoke a function in an unmanaged dynamic library, such as a dynamic library written with VC6, the process of calling a dynamic library in C # is much easier and quicker than Java calling DLL dynamic libraries, as illustrated below.

1. Create an unmanaged dynamic library

The code is as follows:

The code is as follows:

This sentence declares that the dynamic library outputs a function prototype that is not callable.

extern "C" __declspec (dllexport) int add (int, int);

int add (int a, int b)

{

Implement this function returna+b;

}

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C # Calling a function method in an unmanaged dynamic library

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C # Calling a function method in an unmanaged dynamic library