I am attempting to obtain the class-data behind an ImageButton that is mouse-clicked; which ImageButton is located within a WrapPanel filled with ImageButtons. The problem I am having is obtaining the visibility of the field data within the class behind the image-button. Although I can see the class, I can neither see nor access the field data. Can anyone please point me in the right direction?

// Handles the ImageButton mouseClick event within the WrapPanel.
private void SolarSystem_Click(Object sender, RoutedEventArgs e)
    {
        FrameworkElement fe = e.OriginalSource as FrameworkElement;
        SelectedPlanet PlanetSelected = new SelectedPlanet(fe);
        PlanetSelected.Owner = this;
        MessageBox.Show(PlanetSelected.PlanetName);
    }

// Used to initiate instance of Class and some field data.
public SelectedPlanet(FrameworkElement fe)
    {
        InitializeComponent();
        string sPlanetName = ((PlanetClass)(fe)).PlanetName;
        return sPlanetName
    }

// Class Data
public class PlanetClass
    {
        string planetName;

        public PlanetClass(string planetName)
        {
            PlanetName = planetName;
        }

        public string PlanetName
        {
            set { planetName = value; }
            get { return planetName; }
        }
    }