在返回 Activity 对象数组时，我得到下面显示的错误。无法理解哪里出了问题。任何人都可以帮我解决这个问题。
这是错误
预期来自命名空间“http://schemas.datacontract.org/2004/07/BusinessEntities”的结束元素“ActivityTypeId”。从命名空间“http://schemas.datacontract.org/2004/07/BusinessEntities”中找到元素“a:Code”。第 1 行，位置 450。
UI相关代码：
protected void Page_Load(object sender, EventArgs e)
{
TimeSheetManagementServiceClient serviceClient = new TimeSheetManagementServiceClient("WSHttpBinding_ITimeSheetManagementService");
Activity[] activities=serviceClient.GetActivities();
GridView1.DataSource = activities;
GridView1.DataBind();
}
WCF服务代码
public class TimeSheetManagementService:ITimeSheetManagementService
{
public BusinessEntities.Activity[] GetActivities()
{
TimeSheetManagementDataController controller= new TimeSheetManagementDataController();
var activities = controller.GetActivities().Select(activity => new BusinessEntities.Activity()
{
Code = activity.Code,
Description = activity.Description,
Status =
(EntityStatus)
Enum.Parse(typeof(EntityStatus), ((activity.Status==true) ? 0 : 1).ToString()),
ActivityTypeId = new BusinessEntities.ActivityType()
{
Code=activity.ActivityType.Code,
Description = activity.ActivityType.Description,
Name = activity.ActivityType.Name
}
});
return activities.ToArray();
}
}
服务合同
[ServiceContract]
interface ITimeSheetManagementService
{
[OperationContract]
Activity[] GetActivities();
}
数据合约
[DataContract]
public class Activity
{
[DataMember]
public string Code { get; set; }
[DataMember]
public string Description { get; set; }
[DataMember]
public EntityStatus Status { get; set; }
[DataMember]
public ActivityType ActivityTypeId { get; set; }
}
[DataContract]
public enum EntityStatus
{
[EnumMember]
Active=0,
[EnumMember]
Inactive=1
}
[DataContract]
public class ActivityType
{
[DataMember]
public string Code { get; set; }
[DataMember]
public string Name { get; set; }
[DataMember]
public string Description { get; set; }
}