WPF: Manage margin for all controls in a ContentPresenter

Question

Is it possible to define the "presenting behavior" of a ContentPresenter so that it applies padding to its content?

Now I have a ContentPresenter and define the Margin on all UserControls that can be part of this ContentPresenter.

The downside of this, is that it calls for repeating definitions of Margins, and the UserControls are kind of dedicated to "fit" in the ContentPresenter.

E.g. XAML that contains the content presenter:

    <ContentPresenter 
        x:Name="SettingsContentPanel" 
        Grid.Row="0" 
        Grid.Column="2" 
        Grid.ColumnSpan="2" 
        Content="{Binding ElementName=SettingsGroupSelector, Path=SelectedItem.Tag}" />

And the user controls are defined as follows:

    <UserControl 
        <!-- left out irrelevant definitions -->
        Margin="5,5,5,5">

Answer 1

You should be able to get the effect you're after by setting the Margin on your ContentPresenter element itself e.g:

<ContentPresenter 
    x:Name="SettingsContentPanel" 
    Grid.Row="0" 
    Grid.Column="2" 
    Grid.ColumnSpan="2" 
    Content="{Binding ElementName=SettingsGroupSelector, Path=SelectedItem.Tag}" 
    Margin="5,5,5,5" />

Also, if the Margin is the same on all sides, you could use the shorthand Margin="5".

Hope that helps =D