SPItemEventProperties.AfterProperties Property
Gets a hash table of properties consisting of string/value pairs that correspond to fields in the SPItem object after the event occurred.
Assembly: Microsoft.SharePoint (in Microsoft.SharePoint.dll)
Available in Sandboxed Solutions: Yes
Available in SharePoint Online
Property Value
Type: Microsoft.SharePoint.SPItemEventDataCollectionAn SPItemEventDataCollection object that represents the properties of the item after the event occurred.
When a Boolean column value in a list is set to true and the ItemUpdating method is called, the AfterProperties property reports -1 as the value instead.