c# - Get SelectedItem from TreeView?

Question

Does anyone know how I can get the SelectedItem (not the Header) from a TreeView?
Here is my code:

<TreeView Name="treeView1" DataContext="{Binding Path=PresentationsViewModel}" Grid.Column="1" >
    <TreeViewItem IsExpanded="True" Header="Objects-A-List" DisplayMemberPath="Name" ItemsSource="{Binding Path=MyItem.ListA}"></TreeViewItem>
    <TreeViewItem IsExpanded="True" Header="Objects-B-List" DisplayMemberPath="Name" ItemsSource="{Binding Path=MyItem.ListB}"></TreeViewItem>
    <TreeViewItem IsExpanded="True" Header="Objects-C-List" DisplayMemberPath="Name" ItemsSource="{Binding Path=MyItem.ListC}"></TreeViewItem>
</TreeView>

Note that there are 3 different Lists, containing 3 different Object-Types. It'd help me a lot to have something like:

public Object SelectedObject
{
    set { _selectedObject = value; RunMyMethod(); RaisePropertyChanged("SelectedObject"); }
}  

Answer 1

Ok I know this is an old question and probably dead but as Charlie has it right. This is something that can also be used in code. You could do for example:

<ContentPresenter Content="{Binding ElementName=treeView1, Path=SelectedItem}" />

Which will show the selected item. You can add a style or DataTemplate to that or use a default DataTemplate to the object you are trying to show.