c# - 找不到段 'Property' 的资源

Question

当使用 ADO.Net 数据服务客户端通过调用 LoadProperty 刷新实体时:

ctx.BeginLoadProperty(this, "Owner", (IAsyncResult ar) => ...

如果属性为null，它会在服务器上抛出一个错误

Error: Exception Thrown: System.Data.Services.DataServiceException: Resource not found for the segment 'Owner'. at System.Data.Services.RequestDescription.GetSingleResultFromEnumerable(SegmentInfo segmentInfo) at System.Data.Services.DataService1.CompareETagAndWriteResponse(RequestDescription description, ContentFormat responseFormat, IDataService dataService)
at System.Data.Services.DataService1.SerializeResponseBody(RequestDescription description, IDataService dataService) at System.Data.Services.DataService1.HandleNonBatchRequest(RequestDescription description) at System.Data.Services.DataService`1.HandleRequest()

问题是客户端不知道该属性是 null 还是尚未填充。属性 Owner 是从 Vehicle 到 Customer 的链接。

有什么问题吗？

谢谢

Answer 1

设置IgnoreResourceNotFoundException服务上下文的属性为真:

svc.IgnoreResourceNotFoundException = true;