Win8 wp8 binding variation?

Question

I pass an application from wp8 to win8 and all binding failed in textblock and i don't understand why. Exemple textblock :

<TextBlock  Grid.Row="1" Height="Auto" TextAlignment="Left" Text="{Binding SimulClassement,Converter={StaticResource ClassementConverter}}" Visibility="{Binding VisibilityResultat}" Foreground="#FFFF7901" HorizontalAlignment="Left" VerticalAlignment="Top"/>

My property is like :

private string _simulClassement;
        public string SimulClassement
        {
            get { return _simulClassement; }
            set
            {
                _simulClassement = value;
                RaisePropertyChanged("SimulClassement");
            }
        }

SimulClassement property is already set in my viewmodel but i have nothing in view... I forgot something???

Regars.

Edit:

public class ClassementConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, string language)
        {
            if (value != null)
            {
                return " Classement : " + value;
            }
            return null;
        }

        public object ConvertBack(object value, Type targetType, object parameter, string language)
        {
            throw new NotImplementedException();
        }
    }

I set this property with : SimulClassement = GetSimulClassement(CalculPoints(CalculNombreVictoire(CalculVe2I(SelectedProfile.Classement), SelectedProfile.Classement)), SelectedProfile.Classement, false);

Answer 1

i found my probleme. I have copy past my code with a wrong thing.When i copy past my code, propertychange event was not know in my all view model.So, like a noob, i create for all classes the property and method. My viewmodel was hanging to my property change who was null all time...I need juste to create one time.(virtual method)