Adding more client Data records for Old clients.

Need some help. When a new an Old client comes again, I donot want to edit his data but, I want to be able to search this clients record. and add to his record the new service he is interested in.
1 answers

Use nested views for this. You will have a dataview with the customer details but a datagrid for the orders of this customers. If your domain model das a one to many relation between orders and customer you will see you can use this datagrid to fill the relation. This way you will only see the orders from this customers and not from all the customers.

And take a look at the pizza mario case in the appstore. This will give you some insight.