title: Visual Studio Express can't change data source
body: <p>I am trying to add a SQL Server data source to a C# console app.</p>
  
  <p>When I try and add a new connection to my .dbml file the only Data Source available is Microsoft SQL Server Database File (sqlclient) whereas I need Microsoft SQL Server (sqlclient).</p>
  
  <p>The change button is grayed out, so I can't change it.</p>
  
  <p><img src="https://i.stack.imgur.com/C9fXO.png" alt="enter image description here"></p>
  
  <p>How do I change this? </p>
  
  <p>(I wondered if it was a bug, so tried uninstalling/reinstalling Visual Studio - but still no joy.)</p>