[Surface] Initialisation d'un Usercontrol sur l'event SelectionChanged

Bonjour à tous,

Je cherche à ré-initialiser mon UserControl à chaque Selection de ma surface listbox.

Code:

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<ContentControl x:Name="ContentUserControl">
            <ContentControl.Content>
                <my:Visio360View Grid.Column="0" HorizontalAlignment="Left" x:Name="userControl11" Visibility="Visible" VerticalAlignment="Top" Width="1670" Height="1080" />
            </ContentControl.Content>
        </ContentControl>
 
        <s:SurfaceListBox Grid.Column="2" ItemsSource="{Binding Plan}" SelectedItem="{Binding SelectedPlan}" SelectionChanged="SurfaceListBox_SelectionChanged">
            <s:SurfaceListBox.ItemTemplate>
                <DataTemplate>
                    <MediaElement Volume="0" Grid.Column="1" Grid.Row="1" Height="200" Source="{Binding Chemin}" Width="200" />
                </DataTemplate>
            </s:SurfaceListBox.ItemTemplate>
        </s:SurfaceListBox>