from c++ to c++/cli

Hi!

I have a question about converting from native c++ to c++/cli.
How to convert/rewrite c++ code that looks like this to cli:

//MyC.h

namespace MyNS
{
MyClass
{
public:
void F();
};
}

//MyC.cpp

#include "MyC.h"

namspace MyNS
{
MyClass::F(){....}
}

And second question is, are "using namespace" statements
in header files not recomended also in cli or ...?

Thx!

Best regards,
Zoran Stipanicev

.