Itemupdating before properties afterproperties
occur after the operation runs and Share Point finishes updating the content database.After events can be executed either synchronously or asynchronously.
When we try to add new item in "Software" list in Item Adding event we can see: Where "18" is an Id of category.
Typically, before events are performed for Data Validation, as methods are triggered even before List events are fired and Share Point updates the Content Database.
All the Before Events are synchronous events which are executed in the same thread that a triggering action occurs.
In this post we’ll look at some best practices in working with them.
Event Receivers, Before Events & After Events the Item is actually added or updated to the Share Point List.The Display Name (the name that appears to users in UI) and the Internal Name.