Let’s say you have a mapping between a DTO and an entity. Let’s say that the DTO contains some property that you do not want to be mapped to the entity. How can I tell Automapper to not map this property? I know that you can tell Automapper to not map a destination property. However, that will not help me, as I want to tell Automapper to not map a source property. Here is an example:

public class MyDto
{
    int A { get; set; }
    int B { get; set; }
    int DoNotMapMeToTheEntity { get; set; }

}

public class MyEntity
{
    int A { get; set; }
    int B { get; set; }
}

As you can see, I do not want Automapper to map DoNotMapMeToTheEntity to MyEntity. Now, you might say that, since DoNotMapMeToTheEntity does not exist in MyEntity, Automapper will not map it, so I have nothing to worry about. But what if in the future someone adds DoNotMapMeToTheEntity to MyEntity. Now Automapper will map it, which I don’t want.

I looked for an option to ignore a source property, but could not find it.