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WPF binding a path to the typename of a class
public class Group
{
    public string groupName;

    public string df_groupName
    {
        get { return this.groupName; }
        set { this.groupName = value; }
    }
}

public class BasicGroup : Group
{

}

public class AdvancedGroup : Group
{

}

public class GroupSet
{
    public Group [] groups;

    public Group [] df_groups
    {
        get { return this.groups; }
        set { this.groups = value; }
    }
};

<UserControl.Resources>
    <ResourceDictionary>
        <ObjectDataProvider x:Key="TheData" />

        <DataTemplate x:Key="GroupTemplate">
            <GroupBox Header="{Binding Path=DerivedTypeNameOf(group)}">
                <TextBox Text="This is some text"/>
            </GroupBox>
        </DataTemplate>

    </ResourceDictionary>
</UserControl.Resources>

    <ItemsControl ItemsSource="{Binding Source={StaticResource TheData}, Path=groups}" ItemTemplate="{StaticResource GroupTemplate}">
        <ItemsControl.ItemsPanel>
            <ItemsPanelTemplate>
                <StackPanel />
            </ItemsPanelTemplate>
        </ItemsControl.ItemsPanel>
    </ItemsControl>

public abstract string DerivedTypeName { get; set; }

public class TypeNameConverter : IValueConverter {
  public object Convert(object value, Type targetType,
  object parameter, CultureInfo culture) {
    return value.GetType().Name;
  }

  public object ConvertBack(object value, Type targetType,
  object parameter, CultureInfo culture) {
    throw NotImplementedException();
  }
}