Event itemupdating which
As you design an Application solution in Share Point that involves the use of Share Point event receivers, you have to consider that event receivers can fire in situations that you may not anticipate.
Therefore, you need to code defensively as the object you are expecting to be available in the Event Receiver may be null. So, in our situation, we check for this condition and return immediately when it is true.
In this fourth article in the series on Remote Event Receivers, we will look into some of the applicable business cases around the Remote Event Handlers.
You can reach the previous three articles in this series through the following links: ” as shown below: Now let’s try to delete this item as highlighted below- As soon as the user tries to delete the item Share Point looks for any registered Event Receiver with the List and looks for its Receiver Definition to see what events this Receiver is allowed to receive and executes it.
If you specify the method is to notify a collection of changes to a custom class data source that you cannot make bindable or modify to implement the IEvent Dispatcher interface.
The following schematic example shows how you could use the A collection’s disable Auto Update() method prevents events that represent changes to the underlying data from being broadcast by the view.
Since this is an After Event (as explained in one of the earlier post “ This scenario will talk about validating user inputs and terminate the execution as soon as the input value falls outside the valid value range.Then the component wraps the Array in a collection wrapper.The wrapper must be manually notified of any changes made to the underlying Array data object, and you can use the metadata tag above a class definition, or above a variable declaration within the class, ensures that the class implements the IEvent Dispatcher interface, and causes the class to dispatch property Change events.So, next time you include an Event Receiver as part of your Share Point solution, be sure and test as many “corner cases” as possible to ensure your Event Receiver doesn’t break your application or produce unexpected results.Developing a Sharepoint application would have all the fun of a video game, if only you had infinite lives.