Attaching Event Receivers to Content Types

When you define a content type with a feature, you create 2 XML files as shown below:

• Feature.xml – Use this XML file to define the metadata for the new feature. The ElementManifests element points to the location of the 2^nd XML file storing all of the detailed information on the feature itself.
  
• Elements.xml – Use this file to define the assembly that encapsulates the event handler, the class itself, and also a sequence number that specifies the order.
  

Elements xmlns="http://schemas.microsoft.com/sharepoint/"> <ContentType ID="0x0100c07095261b4f48408d60ad8654b69d68" Name="DevelopingCT" Group="Development" Description="Developing Content Type" Version="0"> <FieldRefs> <FieldRef ID="{0c177b88-bf35-4692-8456-cc14aaabecc0}" Name="DevelopingCTField" /> </FieldRefs> <XmlDocuments> <XmlDocument NamespaceURI="http://schemas.microsoft.com/sharepoint/events"> <spe:Receivers xmlns:spe="http://schemas.microsoft.com/sharepoint/events"> <Receiver> <Name>ItemAdded</Name> <Type>ItemAdded</Type> <SequenceNumber>1</SequenceNumber> <Assembly>AssemblyName, Version=1.0.0.0, Culture=neutral, PublicKeyToken=TokenNumber</Assembly> <Class>Namespace.ClassName</Class> <Data> </Data> <Filter> </Filter> </Receiver> <Receiver> <Name>ItemAdding</Name> <Type>ItemAdding</Type> <SequenceNumber>2</SequenceNumber> <Assembly>AssemblyName, Version=1.0.0.0, Culture=neutral, PublicKeyToken=TokenNumber</Assembly> <Class>Namespace.ClassName</Class> <Data> </Data> <Filter> </Filter> </Receiver> </spe:Receivers> </XmlDocument> </XmlDocuments> </ContentType> </Elements>

Note: Event receivers in content types are defined in a different section of the elements file. The Receiver XmlDocument resides in the http://schemas.microsoft.com/sharepoint/events namespace.

Related post: Writing Event Receiver Class in Code

References:

http://social.msdn.microsoft.com/Forums/en-US/sharepointdevelopment/thread/fecdfc46-3223-4b9d-b218-29bf475b9cd6

http://stackoverflow.com/questions/561835/how-do-you-bound-an-event-receiver-to-a-specific-custom-content-type

http://www.wrox.com/WileyCDA/Section/Programming-Event-Handling-in-Windows-SharePoint-Services.id-306329.html

http://download.microsoft.com/download/b/d/4/bd45c0a8-74bc-4e3a-9735-a715b902f89c/03-EventHandlers.docx