Silverlight-> WCF->数据库->问题 [英] Silverlight -> WCF -> Database -> problem

问题描述

我有一些调用WCF服务的Silverlight代码，然后该服务使用Entity Framework访问数据库并返回记录。

I have some silverlight code that calls a WCF service which then uses the Entity Framework to access the database and return records.

一切正常，但是...当我用经典的ADO.NET代码替换了Entity Framework代码，我得到一个错误：

Everything runs fine but ... when I replace the Entity Framework code with classic ADO.NET code I get an error:

远程服务器返回了一个错误：NotFound

The remote server returned an error: NotFound

当我直接使用单元测试调用ADO.NET代码时，它返回的记录很好，因此ADO.NEt代码不是问题

When I call the ADO.NET code directly with a unit test it returns records fine so it's not a problem with the ADO.NEt code

我用了提琴手，似乎说找不到带有 500错误的服务。

I used fiddler and it seems to say that the service cannot be found with a "500" error.

i不要以为与服务无关，因为我唯一改变的就是访问数据库的技术。

i don't think it's anything to do with the service as the only thing I change is the technology to access the database.

有人知道我在这里缺少什么吗？

Anyone know what i'm missing here?

推荐答案

尝试添加

HttpWebRequest.RegisterPrefix("http://", WebRequestCreator.ClientHttp);

Silverlight应用程序的应用程序启动事件。

to the Application startup event of the Silverlight app.

它应该为您提供真正错误的详细信息，而不是NotFound。就我而言，我缺少跨域请求重新启动的clientaccesspolicy.xml。

It should give you detail of what the real error is rather than NotFound. In my case, i was missing the clientaccesspolicy.xml resuired for cross domain requests.

如何：指定浏览器或客户端HTTP处理

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