c# XmlSerializer List of typed objects

I have the problem that I got xml from a REST service and have to deserialize it to an object structure and there is a type="proglang" in it.

<listResult>
   <listEntry xsi:type="proglang">
      <id>0</id>
      <name>C#</name>
   </listEntry>
   <listEntry xsi:type="proglang">
      <id>0</id>
      <name>C#</name>
   </listEntry>
</listResult>

How should the object model with the xml attributes look like in c#?

My Code so far:

[XmlRoot("listResult")]
public class ListResult
{
    [XmlElement("listEntry")]
    //[XmlArrayItem(Type=typeof(proglang))]
    public List<proglang> listEntry;
}

public class proglang
{
    [XmlElement("code")]
    public int id;
    [XmlElement("label")]
    public string name;
}

and the resulting XML from serializing:

<listResult xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <listEntry>
    <code>1</code>
    <label>C#</label>
  </listEntry>
  <listEntry>
    <code>1</code>
    <label>C++</label>
  </listEntry>
</listResult>