title: Delete ComboBox Item by Index
body: <p>I'm seraching for a way to delete a specific item in a ComboBox by index.
  I only found a way to delete the item by value with this code:</p>
  
  <pre><code>cbRooms.Items.Remove((ComboBoxItem)item))
  </code></pre>
  
  <p><strong>Update</strong></p>
  
  <p>I want to use a code like that</p>
  
  <pre><code>ComboBox.Items.Remove(ComboBox.SelectedIndex);
  </code></pre>