Is there a way to tell AutoMapper to ignore all of the properties except the ones which are mapped explicitly?
I have external DTO classes which are likely to change from the outside and I want to avoid specifying each property to be ignored explicitly, since adding new properties will break the functionality (cause exceptions) when trying to map them into my own objects.
The only infromation about ignoring many of members is this thread - http://groups.google.com/group/automapper-users/browse_thread/thread/9928ce9f2ffa641f . I think you can use the trick used in ProvidingCommonBaseClassConfiguration to ignore common properties for similar classes.
And there is no information about the "Ignore the rest" functionality. I've looked at the code before and it seems to me that will be very and very hard to add such functionality. Also you can try to use some attribute and mark with it ignored properties and add some generic/common code to ignore all marked properties.
How would you prefer to specify that certain members be ignored? Is there a convention, or base class, or attribute you would like to apply? Once you get into the business of specifying all the mappings explicitly, I'm not sure what value you'd get out of AutoMapper.