The properties.Cancel is now obsolete. Instead use properties.Status. This has several options.
SPEventReceiverStatus..CancelNoError
SPEventReceiverStatus.CancelWithError
SPEventReceiverStatus..CancelWithRedirectUrl
SPEventReceiverStatus.Continue
This is an improvement from the old way which was a boolean so you just had 2 options. Now you have 4. Image may be NSFW.
Clik here to view.
