title: Are Open and Closed only relevant values of ConnectionState enumeration?
body: <p>The <a href="http://msdn.microsoft.com/en-us/library/system.data.connectionstate.aspx" rel="nofollow noreferrer">MSDN page</a> on ConnectionState enumeration says "This value is reserved for future versions of the product", for all values except Open and Closed. What does that mean? Are other values even used?</p>
  
  <p>However from this <a href="https://stackoverflow.com/questions/103532/handling-different-connectionstates-before-opening-sqlconnection#103901">StackOverflow answer</a> appears that ConnectionState.Broken is also used.</p>