. net web服务无法处理JSON格式的复杂对象

您可以在这里找到我的web服务内容:

[ServiceContract]
public interface IProcessing
{
    [OperationContract]
    [WebInvoke(Method = "GET", RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json, UriTemplate = "person/{id}")]
    Person GetPerson(string id);
}

我有两个模型，人物和图片。当我尝试以JSON格式从web服务获取图片时，一切都很好，WS返回的结果是正确的。

但这是不一样的，当我试图发送Person对象。

你可以在这里找到我的模型属性:

 Person : 
{
    using System;
    using System.Runtime.Serialization;
    /// <summary>
    /// Class which define the object Person.
    /// </summary>
    [DataContract]
    public class Person
    {
        #region Constructor
        /// <summary>
        /// Constructor
        /// </summary>
        public Person()
        {
        }

:

/// <summary>
    /// Class which define the object Team.
    /// </summary>
    [DataContract]
    public class Picture
    {
        #region Constructor
        /// <summary>
        /// Constructor
        /// </summary>
        public Picture()
        {
        }
        #endregion
        #region Properties
        /// <summary>
        /// Gets or sets the id of the picture
        /// </summary>
        [DataMember]
        public int ID { get; set; }
        /// <summary>
        /// Gets or sets the url of the picture
        /// </summary>
        [DataMember]
        public string URL { get; set; }
        /// <summary>
        /// Gets or sets the color code of the picture
        /// </summary>
        [DataMember]
        public string ColorCode { get; set; }
        #endregion
    }
}