How do I refresh a form datasource after updating a record in X++?

Usually, if you updated the current record and want the form to show the database value again:

myTable.update();

MyTable_ds.reread();
MyTable_ds.refresh();

If the actual result set needs to be rerun:

MyTable_ds.research(true);

Do not automatically call refresh(), reread(), research(), and executeQuery() together. Use the one that matches what changed.