Itemupdating event handler what is speed dating like

Posted by / 20-Apr-2018 07:32

Itemupdating event handler

Later on, when you checked the document in, you would see those events fire again.So the double-event firing isn’t a bug, it’s just a result of the automatic check-in that occurs when you first add a document to a document library.To check if the name of the planet is changed, you can compare the Title column before the changes with the Title of the changed item.The changed values can be retrieved from the After Properties of the incoming properties argument.Turning off the Require Check Out option is a great quick fix if you don’t require the item to be checked out in order for it to be edited.But that option exists to be used, and some people really do need it.This walkthrough is based on the first one where I have a custom list with planets of our solar system.Users can change data like the number of moons or the distance to the earth, but they are not able to change the name of the planet.

Next, let’s look at what happens when the user adds a document when the Require Check Out option is enabled.the actual Add / Update operation for which the Adding / Updating event is being fired).Do NOT try to manually get the list item in code and update a property on it because the optimistic locking mechanism in Share Point may throw an error later on when the operation associated with the event to which you are responding attempts to complete.You could think that the current values are stored in the Before Properties of the item but that’s not true: the Before Properties are unreliable at this point. When the name of the planet is changed, the update is canceled and an error message is returned to the user.If the name isn’t changed, the changes are saved to the Share Point list.

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