public void Connect()

private bool Initialize() {
      string runTimeEnv;
#if TEST
      runTimeEnv = "Test";
#else
      runTimeEnv = "Prod";
#endif

      // Initialize an EntityManager for the given data source extension, and set up an error handler.
      IdeaBladeTest1Manager mgr = new IdeaBladeTest1Manager(false, runTimeEnv);
      mgr.EntityServerError += EntityServerErrorHandler;

      // Explicitly connect to the BOS now.
      // Note that no data source connection is made until entities are accessed.
      try {
        mgr.Connect();
      } catch (EntityServerException ese) {
        MessageBox.Show(ese.Message, "EntityServerException");
      } catch (Exception e) {
        MessageBox.Show(e.Message, "Exception");
      }
      return mgr.IsConnected;
    }
    private void EntityServerErrorHandler(object pSender, EntityServerErrorEventArgs e) {
      // Always a good idea to log all exception info.
      Exception ex = e.Exception;
      while (ex != null) {
        TraceFns.WriteLine(ex.ToString());
        ex = ex.InnerException;
      }
      MessageBox.Show("Trying to handle error");
      // Leave e.Handled = false if the Error should be thrown back to the calling code
      e.Handled = true;         // exception will not be thrown
    }