Raised when an annotation is created by the user.
Atalasoft.dotImage.WebControls (in Atalasoft.dotImage.WebControls.dll) Version: 188.8.131.52.0.297 (.NET 4.5.2, x86)
This event is only raised when an annotation is added by the user drawing it with
the mouse. Adding annotations to a LayerAnnotation will not raise this event.