title: Default settings for bound WPF DependencyProperty
body: <p>I've created a custom user control named <code>MyCustomComboBox</code>. Everywhere in the application I put it I do the following:</p>
  
  <pre><code>    &lt;Widgets:MyCustomComboBox
          Foo="{Binding Foo, 
              UpdateSourceTrigger=PropertyChanged, Mode=TwoWay}" /&gt; 
  </code></pre>
  
  <p>MyCustomComboxBox has the dependency property <code>Foo</code>, I have some validation and other logic in the combobox which is the very reason why I wrapped it up in a custom control.</p>
  
  <p>The custom combobox is included another user control which also has a <code>Foo</code> property, which the combobox's is bound to.</p>
  
  <p>But I also have to set <code>UpdateSourceTrigger</code> and <code>Mode</code>, I would like to somehow specify that those are the default values when binding to that DependencyProperty. Can it be done?</p>