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Asked: 2026-06-05T17:29:37+00:00

I’ve general questions while importing a C++ created DLL into C#. 1) I’ve written

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I’ve general questions while importing a C++ created DLL into C#.

1) I’ve written C++ functions making use of pointers such as double pointers, array of pointers etc.
e.g. static int someFunc(char *var[])
How do i re-use them as C# does not support pointers.

2) Do I need to expose all the functions through [DllImport()] in C#? i.e. I’ve a function called someFunc which calls other functions internally. Should I expose those functions too under ‘DllImport’

3) Can anyone please explain why I require to handle the unmanaged code in C# especially when I import dlls from C++?

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1 Answer

  1. Editorial Team

    Point 1 Answer:
    use the unsafe keyword in function declaration in C#

    static unsafe int someFunc(char* var[]);

    point 2 Answer:
    There is no need to import all functions. only import someFunc()

    point 3 answer:
    C# uses managed code which is type safe and refers to some valid memory location. However pointers as in C++ may or may not refer to any valid memory location. So you need to handle unmanaged code in C#.

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