How to pass an integer array reference to managed C++ from C#

[Cindy]

I have created a managed C++ wrapper class to wrap the unmanaged C++ dll.
The GUI is using C#. In C#, I want to pass an int array to my managed C++
class to get the result back to C#. Something likes below
In C#:
public void FuncA()
{
int[] a;
a=new int[5];
a[0]=1;
...
WrappedClass.Ge tIntegerValue(r ef a)
}
In C++:
public:
void WrapperClass::G etIntegerValue( int __gc* []);

It cannot be compiled. Please help