Linking VC++ 2008 Dll with C#.Net 2008 Exe

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C++

C#

VC9.0

C#4.0

I have created a small application in C# .NET 2008, in which i am trying to use VC++ .NET 2008 Dll.

In Dll, one class is created, in that one function and one variable are added.
In C#, Window form application, i have added VC Dll reference.

Now i can create object of Dll, but i am unable to access it function or variable.
It give error message as -

"____ does not contain a definition for ____ and no extension method ____ accepting a first argument of type _____ could be found (are you missing a using directive or an assembly reference)"


Posting here my code snippet
---------------------------------------------------------------
VC 2008 code -

#include "stdafx.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif

namespace DllNameSp
{       
    public class Test
    {
    public:         
        int abc;
        int iTest()
        {
            int z=0,x=0,y=0;
            return z=x+y;
        }
    };
}

-------------------------------------------------------
C# code

        private void Form1_Load(object sender, EventArgs e)
{
    DllNameSp.Test obj1 = new DllNameSp.Test();
    obj1.abc = 90;
    int k = obj1.iTest();   
}