C++ Ref class not a member of System::IDisposable; trouble implementing IDisposable

Question

I want to make a global vector of my own object class called "Person". However, the compiler says that

    error C2039: '{dtor}' : is not a member of 'System::IDisposable'
1>        c:\windows\microsoft.net\framework\v2.0.50727\mscorlib.dll : see declaration of 'System::IDisposable'

So I looked up how to implement IDisposable (which I now know is used primarily for unmanaged resources) but still can't seem to implement it with the following:

ref class Globals : System::IDisposable
{  
public: 
  static cliext::vector<Person^> person_data = gcnew cliext::vector<Person^>;
    void Dispose()
    {
         delete person_data;
    }
}; 

The 2 errors I get are:

error C2605: 'Dispose' : this method is reserved within a managed class
1>        did you intend to define a destructor?
error C3766: 'Globals' must provide an implementation for the interface method 'void System::IDisposable::Dispose(void)'
1>        c:\windows\microsoft.net\framework\v2.0.50727\mscorlib.dll : see declaration of 'System::IDisposable::Dispose'

Answer 1

You don't have to explicitly derive from IDisposable. Following the MSDN doco, use the following pattern:

ref class Globals
{
public:
    static cliext::vector<Person^> person_data = gcnew cliext::vector<Person^>;
    !Globals() // finalizer
    {
        delete person_data;
    {
protected:
    ~Globals() // destructor calls finalizer
    {
        this->!Globals();
    }
};

Answer 2

Use a destructor. In C++/CLI ~ClassName() is Dispose() and !ClassName() is equivalent to C#'s ~ClassName(). In your case:

ref class Globals : System::IDisposable
{  
public: 
    static cliext::vector<Person^> person_data = gcnew cliext::vector<Person^>;
    void ~Globals()
    {
        delete person_data;
    }
};