Binding base class object to Gridview itemSource in windows store app( metro app) c++ not working

Question

In my windows store app i implement the property change event in a base class named "BaseClass" and write the properties which i want to bind to my gridview item and i inherit the this base class "BaseClass" in Derived class "DerivedClass".

[Windows::UI::Xaml::Data::Bindable]
ref class BaseClass: Windows::UI::Xaml::DependencyObject, Windows::UI::Xaml::Data::INotifyPropertyChanged
{
}

ref class DerivedClass: public BaseClass
{
}

then i created a Windows::UI::Xaml::Interop::IBindableObservableVector^ vector and append base class object from derived class object using safe_cast. But its not binding the base class data to grid view but when i create an object of base class its can bind the data to gridview.

DerivedClass^ derivedClass = ref new DerivedClass();
BaseClass^ baseClass = safe_cast<BaseClass^>(derivedClass);

Windows::UI::Xaml::Interop::IBindableObservableVector^ m_Vector = ref new Platform::Collections::Vector<BaseClass^>();
m_Vector->Append(baseClass);

gridview->ItemsSource = m_Vector; // Not binding data to gridview.

but

BaseClass^ baseClass2 = ref new BaseClass();
Windows::UI::Xaml::Interop::IBindableObservableVector^ m_Vector = ref new Platform::Collections::Vector<BaseClass^>();
m_Vector->Append(baseClass2);

gridview->ItemsSource = m_Vector; // its Binding data to gridview.

Answer 1

You might need to annotate your view model as bindable:

[Windows::UI::Xaml::Data::Bindable]
ref class DerivedClass: public BaseClass
{

}