Destructor and finalizer : Destructor « Class « Visual C++ .NET

1. Visual C++ .NET
2. Class
3. Destructor

Destructor and finalizer

 
#include "stdafx.h"
using namespace System;
using namespace System::Collections::Generic;

ref class MyClass{
    static List<MyClass^>^ instanceTrackingList;

    static MyClas(){
       instanceTrackingList = gcnew List<MyClass^>;
    }

    MyClass(String^ s)
    {
       Label = s;
       instanceTrackingList->Add( this );
    }

    property String^ Label;

    static int EnumerateInstances()
    {
       int i = 0;
       for each (MyClass^ r in instanceTrackingList)
       {
           i++;
           Console::WriteLine( r->Label );
       }
       return i;
    }

    ~MyClass()   // destructor
    {
       this->!MyClass();
    }

    !MyClass()   // finalizer
    {
       instanceTrackingList->Remove( this );
    }
};

int main(){
    MyClass r1("ABC");
    MyClass^ r2 = gcnew MyClass("XYZ");

    int count = MyClass::EnumerateInstances();
    Console::WriteLine("Object count: " + count);

    delete r2;
    count = MyClass::EnumerateInstances();
    Console::WriteLine("Object count: " + count);
}

   
  

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