反序列化实体

Question

[DataContract(Name="UserInfo")] public class User {     [DataMember(Name = "ID")]     public string UserID{get;set;}     [DataMember(Name="Name")]     public string UserName { get; set; }     [DataMember(Name="Pwd")]     public string UserPwd { get; set; }     [DataMember(Name="Sex")]     public bool Sex { get; set; }     [DataMember(Name="Age")]     public int Age { get; set; } }通过AJAX发送回数据{"CalssName":"UserInfo","ClassData":"{"ID":"530332","Name":"张三","Pwd":"123456","Sex":"0","Age":"20"}"}怎么样把它"反序列化"来生成一个User实体对象