Do not load the resource at the appointment

Hello,

I did all the steps in the documentation, I do not load the selected resource of the appointment, but if they are saving in the database the 3 tables

I need help, what am I doing wrong

I leave the code and attach images

        public radForm1()
        {
            InitializeComponent();

            AppointmentsTableAdapter appointmentsTableAdapter = new AppointmentsTableAdapter();
            appointmentsTableAdapter.Fill(testDataSet.Appointments);

            ResourcesTableAdapter resourcesTableAdapter = new ResourcesTableAdapter();
            resourcesTableAdapter.Fill(testDataSet.Resources);

            AppointmentsResourcesTableAdapter appointmentsResourcesTableAdapter = new AppointmentsResourcesTableAdapter();
            appointmentsResourcesTableAdapter.Fill(testDataSet.AppointmentsResources);

        }

  private void radButtonSave_Click(object sender, EventArgs e)
        {
            AppointmentsTableAdapter appointmentsTableAdapter = new AppointmentsTableAdapter();
            AppointmentsResourcesTableAdapter appointmentsResourcesTableAdapter = new AppointmentsResourcesTableAdapter();

            TestDataSet.AppointmentsResourcesDataTable deletedChildRecords =
                this.testDataSet.AppointmentsResources.GetChanges(DataRowState.Deleted)
                as TestDataSet.AppointmentsResourcesDataTable;

            TestDataSet.AppointmentsResourcesDataTable newChildRecords =
              this.testDataSet.AppointmentsResources.GetChanges(DataRowState.Added)
              as TestDataSet.AppointmentsResourcesDataTable;

            TestDataSet.AppointmentsResourcesDataTable modifiedChildRecords =
            this.testDataSet.AppointmentsResources.GetChanges(DataRowState.Modified)
            as TestDataSet.AppointmentsResourcesDataTable;

            try
            {
                if (deletedChildRecords != null)
                {
                    appointmentsResourcesTableAdapter.Update(deletedChildRecords);
                }
                appointmentsTableAdapter.Update(this.DataSet.Appointments);

                if (newChildRecords != null)
                {
                    appointmentsResourcesTableAdapter.Update(newChildRecords);
                }

                if (modifiedChildRecords != null)
                {
                    appointmentsResourcesTableAdapter.Update(modifiedChildRecords);
                }

                this.DataSet.AcceptChanges();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            finally
            {
                if (deletedChildRecords != null)
                    deletedChildRecords.Dispose();

                if (newChildRecords != null)
                    newChildRecords.Dispose();

                if (modifiedChildRecords != null)
                    modifiedChildRecords.Dispose();

            }
        }