title: WPF Create a slide out panel
body: <p>I don't know how this works technically but my requirement is as follows. I have a <code>DataGrid</code> and to input data into the <code>DataGrid</code>, I want a panel at the bottom of the <code>DataGrid</code> that slides out on a button click showing input options. Except, as the panel slides out, the <code>DataGrid</code> has to resize vertically as well. Can someone throw some light on how I can implement this?</p>