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POHow do I get AutoMapper to not cache mapped objects?
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  1. POHow do I get AutoMapper to not cache mapped objects?
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    copied!<p>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 <code>.Equals()</code>.</p> <p>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 <code>.Equals()</code>, 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.</p> <p>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.</p> <p>Here is an example on how to reproduce.</p> <pre><code>void Main() { var source = new List&lt;Tag&gt; { new Tag { Id = 1, Name = "Tag 1", ChildTags = new List&lt;Tag&gt; { new Tag { Id = 2, Name = "Tag 2", ChildTags = new List&lt;Tag&gt; { 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&lt;Tag&gt; { new Tag {Id = 4, Name = "Tag 4"} } } }; Mapper.CreateMap&lt;Tag, Tag&gt;(); var results = Mapper.Map&lt;IList&lt;Tag&gt;, IList&lt;Tag&gt;&gt;(source); results.Dump(); } public class Tag { public int Id { get; set; } public string Name { get; set; } public IEnumerable&lt;Tag&gt; 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(); } } </code></pre>
 

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