There are two ways to add a new record to the resultset.
The first is calling Resultset.Append:
rs.Address = "Main street 100";
The second method is creating a new record object with the Resultset.NewRecord method, and adding it to the resultset later:
EmployeesRecord record = rs.NewRecord();
record.Address = "Main street 100";
In the case of an "ObservableCollection" type of recordset that implements data binding, the second method makes sure that the new-item event (INotifyCollectionChanged) is only fired after the record columns are filled with data.