[This documentation is preliminary and is subject to change.]
Microsoft SharePoint Foundation 2010 supports multiple new events, including on-create events for lists and Web sites and support for synchronous after events. Many of the new events are available in both synchronous and asynchronous modes. SharePoint Foundation offers a more approachable events infrastructure that is easier to program against than earlier versions.

What's New in the Event Model
New events in SharePoint Foundation 2010 include the following:
Additionally, new event model capabilities include the following:
Event registration at the site collection level.
XML event registration at the site receiver.
Improved semantics for retrieving event data.
Improved user interface for form-level events.

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See Also