title: Specify default WCF endpoint in app.config
body: <p>When you add a service reference it creates the class "MyServiceClient" with a default constructor.  If I use <strong>new MyServiceClient()</strong> I get an error: Could not find default endpoint...  If I use <strong>new MyServiceClient("endpointName")</strong> it works.</p>
  
  <p>I would like to specify a default endpoint in app/web.config which will get used when I use the default constructor.  I know I can place that default name in *.settings and use it throughout my app, but just wondering if there is any built-in way to do it.</p>