Spitemeventreceiver itemupdating

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Although asynchronous events expose a SPItem Event Properties parameter named properties just like their synchronous counterparts, remember that the operation has already completed so you cannot modify anything in the properties parameter (well, you can, but it doesn’t do anything).Additionally, the properties parameter may not be populated with information that you would tend to expect to be present.Alternatively, if you were using an event handler to update another list, you might be able to disable the events on those.(I’ve not tried this.) Finally, if you wanted to turn off or on event firing from your own code, without an event handler – like if you were creating a number of items from a console application, etc.

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I have the following code, it deploys and activates just fine, but when I add a new document to the document library, nothing happens. And this is taken directly from another example from someone online who said it works. I have never used Http Context in event receivers till recently, so I was quite surprised when I got a Null Reference Exception, trying to access Http Context. Such simple class could resemble the following: Administration Allow Unsafe Updates Arc GIS ASP. In my opinion the best way in this case is to have a class that is derived from SPItem Event Receiver, manipulates Http Context and serves as a base class for all custom event receivers.I became curious, though, and wanted to see how it worked.Time to use Share Point Dev Tool #1 (Reflector) on the SPEvent Receiver Base class…

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