WCF EFCodeFirst 序列化问题

[needhx]

在Service里面能够查询结果，但是Client端接收的时候抛出System.Net.WebException:{"The underlying connection was closed: An unexpected error occurred on a receive."}


private EFDbContext db = new EFDbContext();
public TestData GetDataByName(string gName)
{
TestData d = db.Genres.Include("TestData2").Single(x => x.Name == gName);
return d;
}

EFDbContext
｛
public DbSet<TestData> TestDatas { get; set; }

public DbSet<TestData2> TestData2s { get; set; }
｝


我有两个类：
[DataContract]
public class TestData
{
[DataMember]
public string Name { get; set; }

[DataMember]
public string TestDataID { get; set; }

[DataMember]
public List<TestData2> TestData2s { get; set; }
}

[DataContract]
public class TestData2
{
[DataMember]
public string Name { get; set; }

[DataMember]
public string TestData2ID { get; set; }

[DataMember]
public string TestDataID { get; set; }

[DataMember]
public virtual TestData TestData { get; set; }
}

[needhx]

没有人回复？