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How to use c++ classes and functions in c#?

J.Surjith Kumar asked:

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Question 1:
I want to use the class and functions of c++ to C# code so i exported the class and created dll successfully using c++. How to import the class from dll to c#.
Here is my c++ code(Exporting the class):
 #define DllExport   __declspec( dllexport )
 #define DllExport   __declspec( dllimport )

class DllExport a
double MOIRectangle(double b, double h);
double MOISemiCircle(double r);
double MOITriangle(double b, double h, int);

// MomentOfInertia.cpp : 
#include "stdafx.h"
// Calculation of the moment of inertia
#include "MomentOfInertia.h"
double a::MOIRectangle(double b, double h)
return b * h * h * h / 3;
double a::MOISemiCircle(double r)
const double PI = 3.14159;
return r * r * r * r * PI / 8;
double a::MOITriangle(double b, double h, int)
return b * h * h * h / 12;
Tags: C++, C, C#, VisualC++


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