如何通过Silverlight 4-WP7客户端使用SOAP-OData-Json的WCF RIA? [英] How do i use WCF RIA by SOAP-OData-Json via Silverlight 4 - WP7 Client?

问题描述

大家好，

我有一个域服务(在Silverlight业务应用程序Web中构建)，Silverlight App本地应用程序(例如TestAppSilverlight和TestAppSilverlight.Web)可以，我可以实现CRUD方法. (但我无法使该应用异步！！！)

但是，当我通过SOAP-ODATA-JSON为另一个Silverlight应用程序部署此域服务时，实现该服务(使用SOAP-VS 2010调试服务内部的某些错误，使用ODATA-JSON可以)以及我检索时遇到了大问题一些记录(通过ODTA-JSON)，我从IE收到了这样的消息:

Hi guys,

I had a domain services (build in Silverlight Business Application Web) the Silverlight App local (e.g TestAppSilverlight and TestAppSilverlight.Web) is ok which I can implement CRUD method. (but I can''t async this app !!!)

But when I deploy this domain services via SOAP-ODATA-JSON for another Silverlight App ,i got big problem when implement this service (with SOAP-VS 2010 debug some error inside the sevice,with ODATA-JSON are ok) and when I retrieve some record (via ODTA-JSON) i got message from IE like that :

===========
Webpage error details
User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1) ; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E) Timestamp: Wed, 20 Apr 2011 03:27:25 UTC
Message: Unhandled Error in Silverlight Application Silverlight does not enable you to directly enumerate over a data service query. This is because enumeration automatically sends a synchronous request to the data service. Because Silverlight only supports asynchronous operations, you must instead call the BeginExecute and EndExecute methods to obtain a query result that supports enumeration. at System.Data.Services.Client.DataServiceQuery1.System.Collections.Generic.IEnumerable<TElement>.GetEnumerator() at System.Collections.Generic.List1..ctor(IEnumerable1 collection) at System.Linq.Enumerable.ToList[TSource](IEnumerable1 source) at SilverlightClient.MainPage..ctor() at SilverlightClient.App.Application_Startup(Object sender, StartupEventArgs e) at MS.Internal.CoreInvokeHandler.InvokeEventHandler(Int32 typeIndex, Delegate handlerDelegate, Object sender, Object args) at MS.Internal.JoltHelper.FireEvent(IntPtr unmanagedObj, IntPtr unmanagedObjArgs, Int32 argsTypeIndex, Int32 actualArgsTypeIndex, String eventName) Line: 1 Char: 1 Code: 0
================

我现在该怎么办:(?
请帮助我.

What should I do now :( ?
Please help me.

推荐答案

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您不能枚举(收集)一些集合.

尝试执行"var myNewCollection = yourCollection.ToList();"首先并对此进行枚举.

You can''t enumerate (do a foreach) on some collection.

Try doing a "var myNewCollection = yourCollection.ToList();" first and enumerate on that.

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