.SystemUpdate() / .Update() on ItemUpdating

Question

I'm updating an item and getting the version of this item to input its value in another list.

The big problem is that I need to verify if a field on the afterproperties is diferent of the new value in the ItemUpdated.

• Simple Question 1: How can I verify (in ItemUpdated) the original value of a field(column) ?

• Simple Question 2: How can I do an UPDATE on the ItemUpdating without receive conflict message?

Answer 1

1. In ItemUpdated you can get previous field values only from item's version history
2. In the ItemUpdating your can set up AfterProperties["YourFieldInternalName"] to set new filed values to current list item