Pre-Validation Events for Delete Plugins

When you are creating a plugin that must perform certain actions on the Delete message, you might at times try to make changes to the associated records of the records that is being deleted. When you call the Delete message using either the Pre-Operation or Post-Operation events, the associations to the underlying related records are deleted before the actual records is deleted. 

Open Entity Form with the new Xrm.Utility object

Update Rollup 8 for Microsoft Dynamics CRM 2011 was released in May 2011, but an updated SDK was not provided with the rollup.
The Xrm.Utility objet provides a container for a couple of useful functions, that are available in every page that supports scripting. These functions can be used from form scripts or ribbon commands.