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我使用LINQ-to-SQL進行CRUD功能，並且DataContractJsonSerializer將對象序列化爲JSON。我也使用ASP.NET MVC的數據綁定將值發佈到插入的MVC操作。問題是它會序列化除以外的所有屬性的Id屬性。我已經得到了模型設置爲這樣：爲什麼DataContractJsonSerializer不能序列化我的Id屬性？
[Serializable]
[DataContract(Name = "campaign")]
[Table(Name = "hl.campaigns")]
public class Campaign
{
[DataMember(Name = "id")]
[Column(Name = "id", AutoSync = AutoSync.OnInsert, IsDbGenerated = true, IsPrimaryKey = true)]
public Int32 Id { get; set; }
[DataMember(Name = "createdBy")]
[Column(Name = "created_by")]
public Int32 CreatedBy { get; set; }
[DataMember(Name = "createdOnUtc")]
[Column(Name = "created_on_utc")]
public DateTime CreatedOnUtc { get; set; }
[DataMember(Name = "name")]
[Column(Name = "name", DbType = "NVarChar(256)")]
public String Name { get; set; }
/* more properties here */
}
這裏是我的自定義JsonDataContractActionResult：
public class JsonDataContractActionResult : ActionResult
{
public JsonDataContractActionResult(Object data)
{
this.Data = data;
}
public Object Data { get; private set; }
public override void ExecuteResult(ControllerContext context)
{
var serializer = new DataContractJsonSerializer(this.Data.GetType());
String output = String.Empty;
using (var ms = new MemoryStream())
{
serializer.WriteObject(ms, this.Data);
output = Encoding.Default.GetString(ms.ToArray());
}
context.HttpContext.Response.ContentType = "application/json";
context.HttpContext.Response.Write(output);
}
}
這裏的動作（JsonContract（）返回一個JsonDataContractActionResult）：
[AcceptVerbs(HttpVerbs.Post)]
public ActionResult Modify([Bind(Prefix = "campaign")] Campaign campaign)
{
if (campaign.Id == 0)
{
try
{
CoreDB.Campaigns.InsertOnSubmit(campaign);
CoreDB.SubmitChanges();
return JsonContract(campaign);
}
catch(Exception ex)
{
// TODO: error handling
}
}
return null; // TODO: modification
}
我唯一能想到的就是數據綁定以某種方式阻止了Id屬性被序列化，因爲它在從表單數據反序列化後被填充。有什麼建議麼？