Form events occur when something happens to an item displayed in a form, such as when it's saved or opened or when a user-defined action is started.
Most often, form events are handled by VBScript code within the form itself. Learn about working with Outlook events.
Some events can be cancelled. That is, your event handler can prevent Microsoft Outlook from performing the default action associated with the event. For example, you can write an event handler for the Forward event to prevent an item from being sent to recipients who are not on a list of approved recipients. Learn about canceling an event.
The following table lists the form events supported by Outlook.
Event
| Cancelable? | Description | |
|---|---|---|
| AttachmentAdd | No | Occurs when an attachment has been added to the item |
| AttachmentRead | No | Occurs when an attachment has been opened for reading |
| BeforeAttachmentSave | Yes | Occurs before an attachment is saved |
| BeforeCheckNames | Yes | Occurs before Outlook starts resolving names in the recipients collection of the item |
| Close | Yes | Occurs before Outlook closes the inspector displaying the item |
| CustomAction | Yes | Occurs before Outlook executes a custom action of an item |
| CustomPropertyChange | No | Occurs when a custom item property has changed |
| Forward | Yes | Occurs before Outlook executes the Forward action of an item |
| Open | Yes | Occurs before Outlook opens an inspector to display the item |
| PropertyChange | No | Occurs when an item property has changed |
| Read | No | Occurs when an item is opened for editing by a user |
| Reply | Yes | Occurs before Outlook executes the Reply action of an item |
| ReplyAll | Yes | Occurs before Outlook executes the Reply to All action of an item |
| Send | Yes | Occurs before Outlook sends the item |
| Write | Yes | Occurs before Outlook saves the item in a folder |