How to inject C # DLL replacing C ++ DLL

See more:

unmanaged

managed

Hello, I have a console application created in c ++ that loads a dll, let's say target.dll, this library contains only one function

What I have tried:

void Print (char * text)
{
    // Code in c ++ to print in console
}

but I need to inject my own dll made in c # creating the same function

public void Print (string text)
{
   Console.WriteLine (text);
}

Using EasyHook I manage to load my dll but it throws me the error
% 1 is not a valid win32 application
How could I make it funsional?
Greetings