Extending Microsoft Dynamics 365 for Operations Cookbook

Hooking up the number sequence

The code to tie the various form data source events to the number sequence framework was done in its most abstracted method. This would allow the service order to be extended. For example, if we added a service order type field, we could have a different sequence per type of service order without much rework to the code.

In these methods, we used the keywords element and this. On a form, the this keyword is the most confusing one as it changes depending on where it is used. This is because we have nested class definitions inside the main form class. So, in the context where we used it, this meant ConWHSVehicleServiceTable_DS. Within the root form methods, this means the FormRun object that is created when the ...