JavaScriptSerializer を使用して JSON フィールド名を別の .NET プロパティ名にマップするにはどうすればよいですか?

<code class="language-csharp">[DataContract]
public class DataObject
{
    [DataMember(Name = "user_id")]
    public int UserId { get; set; }

    [DataMember(Name = "detail_level")]
    public string DetailLevel { get; set; }
}</code>

<code class="language-csharp">using System.Runtime.Serialization.Json;
using System.Text;
using System.IO;
using Microsoft.VisualStudio.TestTools.UnitTesting;

[TestClass]
public class DataContractJsonSerializerTest
{
    [TestMethod]
    public void DataObjectSerializationTest()
    {
        DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(DataObject));
        string jsonData = "{\"user_id\":1234,\"detail_level\":\"low\"}"; //Example JSON

        using (MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(jsonData)))
        {
            DataObject dataObject = (DataObject)serializer.ReadObject(ms);

            Assert.IsNotNull(dataObject);
            Assert.AreEqual("low", dataObject.DetailLevel);
            Assert.AreEqual(1234, dataObject.UserId);
        }
    }
}</code>