title: How to make a TextBox with a Button inside in WPF?
body: <p>I'd like to make a <code>TextBox</code> with a <code>Button</code> inside, something like a <code>DatePicker</code>, but not exactly. Or can it be a <code>ComboBox</code> inside the <code>TextBox</code>, so you can switch the mode of the <code>TextBox</code>.</p>
  
  <p>Can you help me?</p>