<p>I'm attempting to use the following code to serialize an anonymous type to JSON:</p>

<pre><code>var serializer = new DataContractJsonSerializer(thing.GetType());
var ms = new MemoryStream();
serializer.WriteObject(ms, thing);
var json = Encoding.Default.GetString(ms.ToArray()); 
</code></pre>

<p>However, I get the following exception when this is executed:</p>

<blockquote>
  <p>Type
  '&lt;>f__AnonymousType1`3[System.Int32,System.Int32,System.Object[]]'
  cannot be serialized. Consider marking
  it with the DataContractAttribute
  attribute, and marking all of its
  members you want serialized with the
  DataMemberAttribute attribute.  See
  the Microsoft .NET Framework
  documentation for other supported
  types.</p>
</blockquote>

<p>I can't apply attributes to an anonymous type (as far as I know).  Is there another way to do this serialization or am I missing something? </p>

Try the JavaScriptSerializer instead of the DataContractJsonSerializer
```
```
JavaScriptSerializer serializer = new JavaScriptSerializer();
var output = serializer.Serialize(your_anon_object);
```
```