title: How can I change the Icon of WPF application
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/1881580/wpf-icon-for-all-app-windows">WPF Icon for all app windows</a>  </p>
  </blockquote>
  
  
  
  <p>I have a <code>wpf</code> application, I want to set the icon for all the windows.</p>
  
  <p>I have and <code>ico</code> file in my project folder /img/app.ico, but it is <code>build action = Resource</code>.</p>
  
  <p>I change the application <code>Icon and manifest</code> to <code>/img/app.ico</code>, but it won't work. </p>
  
  <p>An error is prompt when compiling:</p>
  
  <pre><code>The img/app.ico is not found.
  </code></pre>