Extending Microsoft Dynamics 365 for Operations Cookbook

How it works...

There are few new concepts here, and I'll start with the code structure at the end of the step list.

The most important part of this code is that we didn't write this.ServiceStatus <= ConWHSVehicleServiceStatus::Confirmed. This is an extensible enum, and we can't be sure of the numeric value that the symbols have.

The other part is that we have split what may seem to be a simple if statement in validateWrite into three methods. The reason is reusability. It is nicer to make a record read-only in the form than it is to throw an error when the user tries to save. So, we can use CanEdit to control whether the record is editable on the form, making all controls greyed out.

Check methods are written to simplify the validation methods ...