EntityObject.ReportPropertyChanging Method (String)
Notifies the change tracker that a property change is pending.
Assembly: System.Data.Entity (in System.Data.Entity.dll)
When an entity type is generated by the Entity Data Model tools, the IEntityChangeTracker so that this value can be used as the original value for the property.method is called before a property change to cache the current value of the property in the
This method calls the EntityMemberChanging method in the change tracker.
Available since 3.5