title: Mongodb connection string Invalid keyword data source
body: <p>I am using C# official MongoDB nugget library. </p>
  
  <p>I hosted the web service on <code>Windows Azure</code>, and the MongoDB database at <code>Mongolab</code>.</p>
  
  <p>I connected to a server with the code below:</p>
  
  <pre><code>connection = mongodb://user:pass@ds049999.mongolab.com:45077"
  _server = MongoServer.Create(connection);
  </code></pre>
  
  <p>Previously it is working fine and it work fine at local testing server, but at my latest publish I get error below:</p>
  
  <pre><code>ExceptionMessage":"Invalid keyword 'data source'."," ....... at MongoDB.Driver.MongoConnectionStringBuilder.set_Item(String keyword, Object value)
  </code></pre>
  
  <p>Anyone know what is the problem?</p>