title: How to add vertical scrollbar to combobox programatically
body: <p>I am using silverlight and my combobox is like this:</p>
  
  <pre><code>ComboBox cb = new ComboBox();
  </code></pre>
  
  <p>Suppose it already contains Items which are visible only on clicking the combobox.</p>
  
  <p>I want add a vertical scrollbar(or slider) programatically when it shows its items. Is there any inbuilt property for this in silverlight or do I need to use scrollbar or slider for it?</p>