I currently have a screen that has a parent entity and several child collections. Now, when I make a change on the child collection, that collection's IsDirty property is set to true, but the parent Entity has its IsDirty flag set to false.

 Is there a method to determine if any of this data is dirty without checking each collection since they are all linked?

Sorry it took so long to get you an answer. The answer is no. IsDirty does not walk the hierarchical tree and report tree if something down the line is dirty. However, if this for trying to determine if you need to call save or not you can call Save() and if there are no dirty records then nothing will be sent to the database.

One follow-up question.  I'm going to attempt to do my own IsDirty check on the child collections but I'm having difficulty.  I'm not instantiating my child ES collection directly (i.e. it's using a BindingSource to which a grid control is bound to) so it's unclear how I should cast it back to an ES collection.

My first attempt was to do this: 

CType(CustomerEquipmentProductCollectionByCustomerEquipmentIDBindingSource.DataSource, BusinessObjects.CustomerEquipmentProductCollection).IsDirty