title: What is the difference between Width and ActualWidth in WPF?
body: <p>I am currently working with <code>Panel</code>s in WPF, and I noticed that as regards the <code>Width</code> and <code>Height</code> properties, there are also two other properties called <code>ActualWidth</code> and <code>ActualHeight</code>.</p>
  
  <blockquote>
    <p><code>ActualWidth</code></p>
    
    <p>Gets the rendered width of this
    element. This is a dependency
    property. (Inherited from
    FrameworkElement.)</p>
    
    <p><code>Width</code></p>
    
    <p>Gets or sets the width of the element.
    This is a dependency property.
    (Inherited from FrameworkElement.)</p>
  </blockquote>
  
  <p><em>Reference: <a href="http://msdn.microsoft.com/en-us/library/system.windows.controls.panel_members.aspx" rel="noreferrer">MSDN</a></em></p>
  
  <p>Can anyone point out <strong>the differences between the two and when to use either one ?</strong> </p>