title: How to style a DatePicker?
body: <p>I downloaded a WPFToolkit source, because I wanted to override the default generic template of a DatePicker. For example, I wanted to override this TextBox:</p>
  
  <pre><code>&lt;primitives:DatePickerTextBox x:Name="PART_TextBox" 
              Grid.Row="0" Grid.Column="0" 
              Foreground="{TemplateBinding Foreground}"                  
              HorizontalContentAlignment="Stretch"
              VerticalContentAlignment="Stretch" /&gt;
  </code></pre>
  
  <p>That means that writing this in my project :</p>
  
  <pre><code>&lt;Style TargetType="{x:Type toolkit:DatePickerTextBox}"&gt;
                  &lt;Setter Property="Text" Value="Bitte wählen" /&gt;
                  &lt;Setter Property="MinHeight" Value="20" /&gt;
  </code></pre>
  
  <p>works perfectly. 
  But what if I want to change <code>VerticalContentAlignment="Stretch"</code> to <code>VerticalContentAlignment="Center"</code> ?? The default style always overrides it.
  Thanks for response!</p>