How do I get AutoMapper to not cache mapped objects?

Question

When AutoMapper encounters an object that's already been mapped, it seems to use that object again, instead of trying to re-map it. I believe it does this based on .Equals().

I have a tree that's being mapped. So, a node with some properties, and children. More than one of the nodes have the same value of .Equals(), because it's based off an Id property. The children of the nodes are different and I need those re-mapped, but it's using a cached map value.

Is there a way to turn the cached mapping off? All I can think of is implementing a new converter, but that totally defeats the purpose of using AutoMapper.

Here is an example on how to reproduce.

void Main() {     var source = new List<Tag>     {         new Tag          {              Id = 1,              Name = "Tag 1",              ChildTags = new List<Tag>             {                 new Tag                  {                      Id = 2,                      Name = "Tag 2",                      ChildTags = new List<Tag>                      {                         new Tag {Id = 3, Name = "Tag 3"},                         new Tag {Id = 4, Name = "Tag 4"}                     }                 }             }         },         new Tag { Id = 1, Name = "Tag 1" },         new Tag          {             Id = 3, Name = "Tag 3", ChildTags = new List<Tag>             {                 new Tag {Id = 4, Name = "Tag 4"}             }         }     };      Mapper.CreateMap<Tag, Tag>();     var results = Mapper.Map<IList<Tag>, IList<Tag>>(source);      results.Dump(); }  public class Tag {     public int Id { get; set; }     public string Name { get; set; }     public IEnumerable<Tag> ChildTags { get; set; }      public override bool Equals(Object obj)     {         if (obj == null)         {             return false;         }          var x = this;         var y = (Tag)obj;          return x.Id.Equals(y.Id);     }      public override int GetHashCode()     {         return Id.GetHashCode();     } } 

Answer 1

There is now an option to disable the cache.

Mapper.CreateMap<Tag, Tag>(); var results = Mapper.Map<IList<Tag>, IList<Tag>>(source, opt => opt.DisableCache = true); 

Answer 2

I've faced the same issue with the mapper, looking around i found that a solution for it, by adding

Mapper.Reset(); 

Source blog (corrected URL)