Extending Microsoft Dynamics 365 Finance and Supply Chain Management Cookbook - Second Edition

Using the attribute framework to construct classes

In Chapter 4, Working with Form Logic and Frameworks, we wrote the ConVMSVehicleServiceTableType class. This had a method that determined whether or not the record can be edited. It used a CanEdit method, which in turn called a CanEditStatus method. There was nothing obviously wrong here, but what if our customer wanted to add a status? They could use Chain of Command, which is okay, but this also means we didn't design the solution to be extended in this way. There are two ways to structure the logic in this case:

• Use a switch statement on the status
• Write a class per status that is constructed based on the record's status

The latter option is used by SalesLineType. This is much simpler ...