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POC# Deserialize JSON List of Different Interface Implementations to a list without losing data
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  1. POC# Deserialize JSON List of Different Interface Implementations to a list without losing data
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    copied!<p>I am able to successfully serialize a list containing a mix of Employee and Manager objects to JSON. </p> <p>However, when I attempt to deserialize the JSON back to a List, I'm losing all of the field data from the subclasses and when I try to cast to either of the subclasses, I get a null value. How can I deserialize a list of these Users without losing the data in the fields from the Employee and Manager subclasses?</p> <pre><code>[DataContract] public class User { [DataMember] public string FirstName { get; set; } [DataMember] public string LastName { get; set; } } [DataContract] public class Employee : User { [DataMember] public string JobTitle { get; set; } } [DataContract] public class Manager : User { [DataMember] public string Department { get; set; } } </code></pre> <p><strong>EDIT -- HERE IS MY DESERIALIZATION CODE:</strong></p> <pre><code>// abridged public void Client() { var jsonContent = jsonResponse.Content; var entityList = Deserialize&lt;IEnumerable&lt;T&gt;&gt;(new JsonMediaTypeFormatter(), jsonContent); } protected T Deserialize&lt;T&gt;(MediaTypeFormatter formatter, string str) where T : class { // Write the serialized string to a memory stream. Stream stream = new MemoryStream(); StreamWriter writer = new StreamWriter(stream); writer.Write(str); writer.Flush(); stream.Position = 0; // Deserialize to an object of type T return formatter.ReadFromStreamAsync(typeof(T), stream, null, null).Result as T; } </code></pre>
 

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