I am trying to use the MVVM pattern, and I am wondering where I place an ID value. Do I create a TextBlock that has its visibility property set to collapsed? Or is there a better place to store this kind of data? Currently the command parameter is set to:

CommandParameter="{Binding ElementName=Name,Path=Text}"

But I'd rather it be something like:

CommandParameter="{Binding ElementName=Id,Path=Text}"

I'm totally up for suggestions on what the best way there is to do this, since I'm new to this pattern and presentation language.

<ListBox x:Name="MyListBox" ItemsSource="{Binding MyData, Mode=TwoWay}" BorderThickness="0">        
    <ListBox.ItemTemplate>                
        <DataTemplate>
             <StackPanel Orientation="Horizontal">
                 <CheckBox x:Name="Visible" IsChecked="{Binding Visible, Mode=TwoWay}" Command="{Binding ElementName=MyListBox, Path=DataContext.MyCommand}" CommandParameter="{Binding ElementName=Name,Path=Text}" />
                 <TextBlock Text="{Binding Name}" />
              </StackPanel>  
               </DataTemplate>
    </ListBox.ItemTemplate>            
</ListBox>

EDIT: Option 1

<CheckBox x:Name="Visible" IsChecked="{Binding Visible, Mode=TwoWay}" Command="{Binding ElementName=MyListBox, Path=DataContext.MyCommand}" CommandParameter="{Binding Id}" />

This option gives me just the Id, which is useful in many situations.

EDIT: Option 2

   <CheckBox x:Name="Visible" IsChecked="{Binding Visible, Mode=TwoWay}" Command="{Binding ElementName=MyListBox, Path=DataContext.MyCommand}" CommandParameter="{Binding}" />

This option gives me the full model, which is even useful for my particular situation.