title: Mouse middle button click functionality in Infragistics Ultragrid
body: <p>In Excel, middle mouse button click work as a toggle. That is, if you press it once, it will allow you to scroll in your chosen direction till the time you click it again. 
  However, in Infragistics Ultragrid, this scrolling functionality is available only while middle mouse button remains pressed. How can I make Infragistics Ultragrid middle mouse button click work as in excel?</p>
  
  <p>Otherwise also, what is the way to do it in winforms?</p>