title: How do you create Winform user control that supports multiple items like a listbox
body: <p>I think I understand the basics of create winforms user control.  I can do Add New and select user control and that will give me a design surface and designer file and code-behind file etc.  And then I could change it to inherit from something other than UserControl (like listbox or text box). </p>
  
  <p>The thing that is different for me this time is the user control needs to be a list control (like a list box) that can be data-bound and with two data-bindable controls in it (two combo boxes).</p>
  
  <p>I am not sure where to start? Can anybody reference a document or some obvious bit in the tooling that I am missing that will make it quick and easy?  Any approaches I can take like extending an existing control.  Any gotchas I need to be aware of?</p>
  
  <p>Thanks.</p>
  
  <p>Seth</p>
  
  <p><strong>EDIT</strong><br>
  I have decided to take a different approach.  I am leaving the question up, though.  This is clearly difficulty than I had guessed.  WPF is not an option for me unfortunately.  Just gonna use a data grid.</p>