用于WCF服务的.net类生成器

我有这样的JIRA json字符串:

[
{
    "self": "http://www.example.com/jira/rest/api/2/project/EX",
    "id": "10000",
    "key": "EX",
    "name": "Example",
    "avatarUrls": {
        "48x48": "http://www.example.com/jira/secure/projectavatar?size=large&pid=10000",
        "24x24": "http://www.example.com/jira/secure/projectavatar?size=small&pid=10000",
        "16x16": "http://www.example.com/jira/secure/projectavatar?size=xsmall&pid=10000",
        "32x32": "http://www.example.com/jira/secure/projectavatar?size=medium&pid=10000"
    },
    "projectCategory": {
        "self": "http://www.example.com/jira/rest/api/2/projectCategory/10000",
        "id": "10000",
        "name": "FIRST",
        "description": "First Project Category"
    }
},
{
    "self": "http://www.example.com/jira/rest/api/2/project/ABC",
    "id": "10001",
    "key": "ABC",
    "name": "Alphabetical",
    "avatarUrls": {
        "48x48": "http://www.example.com/jira/secure/projectavatar?size=large&pid=10001",
        "24x24": "http://www.example.com/jira/secure/projectavatar?size=small&pid=10001",
        "16x16": "http://www.example.com/jira/secure/projectavatar?size=xsmall&pid=10001",
        "32x32": "http://www.example.com/jira/secure/projectavatar?size=medium&pid=10001"
    },
    "projectCategory": {
        "self": "http://www.example.com/jira/rest/api/2/projectCategory/10000",
        "id": "10000",
        "name": "FIRST",
        "description": "First Project Category"
    }
}
]

使用this (http://jsonutils.com/)将其转换为。net类。但是，我想在WCF服务中使用这个类。我需要添加数据联系人和数据成员吗?

我得到头像url如下(这是几行代码从我的类):

 public class AvatarUrls
    {
    public string 48x48 { get; set; }
    public string 24x24 { get; set; }
    public string 16x16 { get; set; }
    public string 32x32 { get; set; }
   }

如果我设置"属性属性"作为数据成员。结果显示为:

    [DataContract]
    public class AvatarUrls
    {
        [DataMember(Name="48x48")]
        public string 48x48 { get; set; }
        [DataMember(Name="24x24")]
        public string 24x24 { get; set; }
        [DataMember(Name="16x16")]
        public string 16x16 { get; set; }
        [DataMember(Name="32x32")]
        public string 32x32 { get; set; }
    }

我在这里得到的错误是:1.找不到类型或名称空间名称"x48"(缺少汇编引用)2. String ->期望的类、委托、枚举、接口或结构

只是想知道，我可以在我的WCF代码中这样使用吗?我有点糊涂了，这对不对?怎么了?我错过什么了吗?请帮助。