Event Receivers SharePoint 2010

SPItemEventReceiver - Items
SPListEventReceiver - List Fields
SPWebEventReceiver - Web, Site
Before event - synchronous
After event - can be synchronous, asynchronous
spwebprovisioningprovider for provisioning. It needs to be associated with siteDefintion using assemblyprovisioning in feature.xml

Library Events:

1. Add single new item - adding,added,updating,updated.
2. Multple new item - adding,added
3. changing item
4. metadata edit - updating, updated
5. document and metadata edit - updating, updated, updating, updated
6. Checkedin - updating, updated, checkin
7. checkout -  checkout
8. undo checkout - uncheckout