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There is a little puzzlement among Asynchronousand Synchronous events, however I believe after reading this article, there will be no place for confusion in your brain, the reason for that I go behind a childlike practice to memorize The same babyish method, I want to share with you.A for Apple, A for Asynchronous and A for After events, so all Asynchronous events occur after the event, which does not stop the code to execute.

Now, let’s talk on the subject of Synchronous events, all Synchronous events occur before the event, which stop the code to execute.As a developer interested in catching Share Point events, you are no longer limited to only document libraries and forms libraries.Now you have the ability to catch events on practically every list type that Share Point offers, as well as at the site level, list or library level, and at the individual file level.These fresh events are intended to meet up the requirements and for better elasticity.SPWeb Event Receiver Web Adding: event arises prior to a fresh web site is created, we can control the website to create or not to create by Web Adding event, then no Share Point site is created and the provisioning process is not started.By Matt Ranlett WSS v2 offered developers the ability to catch certain user actions in code and react programmatically.

These user actions triggered a set of asynchronous events which happened after the user had completed the action.

In Share Point 2013 and Office 365 this functionality is gone.

You can still use different Java Script hacks (i.e.

The last issue can be easily avoided by adding a feature dependency to ensure the required feature is activated before we deploy our custom site column.

With this information we can use the following steps to deploy managed metadata fields that avoid these issues.

Unfortunately for v2 developers, all of the event handlers were "after the fact" handlers.