How to enable checkbox inside listbox when button click in C# WPF

My program is to Delete the items in Listbox, when the user clicks DELETE button Checkbox will appear inside listbox items. then user will select checkbox which one to be delete from list..

How can do coding for this ??

<pre> <ListBox x:Name="ListBox_PhoneNumber" Margin="235,39,102,0" Grid.ColumnSpan="2" Grid.Column="1" Grid.Row="1" Grid.RowSpan="3" FontSize="13" FontWeight="Bold">
       <ListBox.Resources>
          <Style TargetType="ListBoxItem">
              <Setter Property="OverridesDefaultStyle" Value="true" />
              <Setter Property="SnapsToDevicePixels" Value="true" />
              <Setter Property="Template">
              <Setter.Value>
       <ControlTemplate TargetType="ListBoxItem">
    <CheckBox Margin="5,2" x:Name="Chk_Listbox" IsChecked="{TemplateBinding IsSelected}">
  <ContentPresenter />
</CheckBox>
          </ControlTemplate>
      </Setter.Value>
      </Setter>
     </Style>
   </ListBox.Resources>
  </ListBox>
<Button Style="{StaticResource ButtonTopBar}" Content="Delete" x:Name="Button_DltSOTA_Authen" HorizontalAlignment="Right" Width="100" Grid.Column="3" Grid.Row="4" FontSize="14" VerticalAlignment="Bottom" Margin="0,0,49,85" Click="Button_DltSOTA_Authen_Click_1" />