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PODynamically mapping with Automapper
 

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    <p>I'm trying to conditionally map two objects based on <code>ExtendedField.type</code>. So if the type is <code>textbox</code> then I would map to the <code>TextBox</code> class, but if it's <code>checkbox</code> then I would map to <code>Checkbox</code> class. And of course this needs to be open for extension to map to other IHtmlElement derived types.</p> <pre><code>Mapper.Map&lt;IEnumerable&lt;ExtendedField, IEnumerable&lt;IHtmlElement&gt;&gt;(extendedFields); </code></pre> <p>A sample of the objects:</p> <pre><code>public class ExtendedField { public string type { get; set; } public string prompt { get; set; } public string value { get; set; } } public Interface IHtmlElement { string label { get; set; } string type { get; set; } string value { get; set; } } public class TextBox : IHtmlElement { public string label { get; set; } public string type { get { return "textbox"; } } public string value { get; set; } } public class CheckBox : IHtmlElement { public string label { get; set; } public string type { get { return "checkbox"; } } public string value { get; set; } } </code></pre> <p>I have created the mapping to map to <code>IHtmlElement</code> but I can't think of how to dynamically tell AutoMapper which concrete class to map to based off the <code>type</code> property.</p> <pre><code>Mapper.CreateMap&lt;ExtendedField, IHtmlElement&gt;() .ForMember(dest =&gt; dest.label, opt =&gt; opt.MapFrom(src =&gt; src.prompt)) .ForMember(dest =&gt; dest.type, opt =&gt; opt.MapFrom(src =&gt; src.type)) .ForMember(dest =&gt; dest.value, opt =&gt; opt.MapFrom(src =&gt; src.extendedFieldValue)); </code></pre>
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