Extending Microsoft Dynamics 365 for Operations Cookbook

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Adding fields as an extension is relatively straightforward, but we also need to handle events such as modifiedField and validateField.

If these are overridden on the table, we could use a Pre or Post-event handler. However, these are not always overridden, and these types of event handlers should always be the last choice; these are discussed later in this chapter.

To handle these events, we would subscribe to the appropriate data event. There are two methods for each: a present-continuous (ing) method and a past tense (ed) method.

The ing methods are called before the event fires, and the ed method fires after the event. They only fire on super(); so, if the developer doesn't call super() in the method, the event will not ...