Here i created in DLL project in vc++ 2008. Following are two code files lib.h and lib.cpp. lib.h

#include "stdafx.h";

class \_\_declspec(dllexport) test
{
public:
    test();
    static void  hello();
    static void  hello1();
};

class \_\_declspec(dllexport) test1
{
public:
    test1();
    void  hello\_test1();
    void  hello1\_test1();

};

lib.cpp

#include "stdafx.h"
#include "lib.h"
#include void test::hello()
{
printf("Hello");
}

void test::hello1()
{
    printf("Hello1");
}

void test1::hello\_test1()
{
    printf("Hello\_test1");
}

void test1::hello1\_test1()
{
    printf("Hello1\_test1");
}

stdafx.h

#include "targetver.h"
#define WIN32_LEAN_AND_MEAN
// Windows Header Files:
#include

dllMain.cpp

#include "stdafx.h"

BOOL APIENTRY DllMain( HMODULE hModule,
DWORD ul_reason_for_call,
LPVOID lpReserved
)
{
switch (ul_reason_for_call)
{
case DLL_PROCESS_ATTACH:
case DLL_THREAD_ATTACH:
case DLL_THREAD_DETACH:
case DLL_PROCESS_DETACH:
break;
}
return TRUE;
}

I have written C# code to call the method of test and test1 classes: consoleApp

[DllImport("lib.dll" )]
public static extern void hello();

\[DllImport("lib.dll")\]
public static extern void hello1();

\[DllImport("lib.dll")\]
public static extern void hello\_test1();

\[DllImport("lib.dll")\]
public static extern void hello1\_test1();

static void Main()
{
hello();
hello1();
hello_test1();
hello1_test1();
Console.ReadKey();
}

when i run above code i have got following error: EntryPointNotFoundException: Unable to find an entry point named 'hello' in DLL 'lib.dll' 1****<-Click 1 for image I know about how to call function only(without using Class) of vc++ DLL from C# but i don't know how to call method of any class and how to code that in proper way in vc++. I know somewhere is mistake in my above code, please experts guide me about my mistake because i tried all from my side. If anyone has full example like above then suggest me. Thanks in advance..