title: Excel VSTO Add-In : User range selection like chart data source
body: <p>My <code>Excel VSTO AddIn</code> should paste data (strings) to a region of cells.<br />
  Before this happens, I want to let the user select the range (fixed size) where the data should be pasted.<br />
  I'd like to visualize this in a similar way, users can manipulate the data source of charts:
  <a href="https://i.stack.imgur.com/Tas6W.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Tas6W.png" alt="enter image description here" /></a></p>
  <p>So, I'm interested in whether it's possible to present the user such a &quot;box&quot; to select a range of cells.</p>