SharePoint Event Receiver Before and After Properties
When working with SharePoint lists and document libraries it’s easy to forget what properties exist when working with event receivers. This really only applies to those still writing on-premises C# code!
SharePoint List
| List | BeforeProperties | AfterProperties | properties.ListItem |
| ItemAdding | No Value | New Value | Null |
| ItemAdded | No Value | New Value | New Value |
| ItemUpdating | No Value | Changed Value | Original Value |
| ItemUpdated | No Value | Changed Value | Changed Value |
| ItemDeleting | No Value | No Value | Original Value |
| ItemDeleted | No Value | No Value | Null |
Lists are fairly straightforward with no before properties available.
SharePoint Document Library
| Library | BeforeProperties | AfterProperties | properties.ListItem |
| ItemAdding | No Value | No Value | Null |
| ItemAdded | No Value | No Value | New Value |
| ItemUpdating | Original Value | Changed Value | Original Value |
| ItemUpdated | Original Value | Changed Value | Changed Value |
| ItemDeleting | No Value | No Value | Original Value |
| ItemDeleted | No Value | No Value | Null |
Hopefully this is a useful reference to someone. I know I look this up quite often and I’m worried it will soon disappear off the face of the internet as the world forgets on-premises SharePoint.
