“正常” SVC 与“Silverlight” SVC (WCF)答案

【问题标题】：'normal' SVC versus 'Silverlight' SVC (WCF)“正常” SVC 与“Silverlight” SVC (WCF)
【发布时间】：2010-04-27 08:21:20
【问题描述】：

我正在尝试从我的 Silverlight 3 应用程序调用 WCF 服务。但是...当尝试在我的 Web 项目中创建“启用silverlight 的 wcf 服务”时，我的 VS2008 在创建项目期间崩溃（我认为是在编辑 web.config 时）。

所以我想：让我们创建一个“普通”wcf 服务，然后手动将其编辑为“启用silverlight 的网络服务”。

所以我想知道有什么区别，其次：为什么从 Silverlight 应用程序调用的服务和非 Silverlight 应用程序调用的服务有区别？

这就是我现在的绑定（我有一个没有接口契约的服务，只是一个直接暴露的类，开始）：

<system.serviceModel>
        <behaviors>
            <serviceBehaviors>
                <behavior name="RadControlsSilverlightApp1.Web.GetNewDataBehavior">
                    <serviceMetadata httpGetEnabled="true" />
                    <serviceDebug includeExceptionDetailInFaults="false" />
                </behavior>
            </serviceBehaviors>
        </behaviors>
        <bindings>
            <customBinding>
                <binding name="customBinding0">
                    <binaryMessageEncoding />
                    <httpTransport />
                </binding>
            </customBinding>
        </bindings>
        <serviceHostingEnvironment aspNetCompatibilityEnabled="true" />
        <services>
            <service behaviorConfiguration="RadControlsSilverlightApp1.Web.GetNewDataBehavior"
             name="RadControlsSilverlightApp1.Web.GetNewData">
                <endpoint address="" binding="customBinding" bindingConfiguration="customBinding0"
                 contract="RadControlsSilverlightApp1.Web.GetNewData" />
                <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
            </service>
        </services>

    </system.serviceModel>

这个不起作用，因为当我从 silverlight 应用程序添加对它的引用时，我收到以下消息：

Warning 2   Custom tool warning: Cannot import wsdl:portType
Detail: An exception was thrown while running a WSDL import extension: System.ServiceModel.Description.DataContractSerializerMessageContractImporter
Error: Exception has been thrown by the target of an invocation.
XPath to Error Source: //wsdl:definitions[@targetNamespace='']/wsdl:portType[@name='GetNewData']    C:\Silverlight\RadControlsSilverlightApp1\RadControlsSilverlightApp1\Service References\ServiceReference1\Reference.svcmap  1   1   RadControlsSilverlightApp1
Warning 3   Custom tool warning: Cannot import wsdl:binding
Detail: There was an error importing a wsdl:portType that the wsdl:binding is dependent on.
XPath to wsdl:portType: //wsdl:definitions[@targetNamespace='']/wsdl:portType[@name='GetNewData']
XPath to Error Source: //wsdl:definitions[@targetNamespace='http://tempuri.org/']/wsdl:binding[@name='CustomBinding_GetNewData']    C:\Silverlight\RadControlsSilverlightApp1\RadControlsSilverlightApp1\Service References\ServiceReference1\Reference.svcmap  1   1   RadControlsSilverlightApp1
Warning 4   Custom tool warning: Cannot import wsdl:port
Detail: There was an error importing a wsdl:binding that the wsdl:port is dependent on.
XPath to wsdl:binding: //wsdl:definitions[@targetNamespace='http://tempuri.org/']/wsdl:binding[@name='CustomBinding_GetNewData']
XPath to Error Source: //wsdl:definitions[@targetNamespace='http://tempuri.org/']/wsdl:service[@name='GetNewData']/wsdl:port[@name='CustomBinding_GetNewData']  C:\Silverlight\RadControlsSilverlightApp1\RadControlsSilverlightApp1\Service References\ServiceReference1\Reference.svcmap  1   1   RadControlsSilverlightApp1
Warning 5   Custom tool warning: No endpoints compatible with Silverlight 3 were found. The generated client class will not be usable unless endpoint information is provided via the constructor.  C:\Silverlight\RadControlsSilverlightApp1\RadControlsSilverlightApp1\Service References\ServiceReference1\Reference.svcmap  1   1   RadControlsSilverlightApp1

(ps.，服务可以在浏览器中启动，我明白了：

svcutil.exe http://localhost:9599/GetNewData.svc?wsdl

)

【问题讨论】：

标签： wcf silverlight silverlight-3.0

【解决方案1】：

为您完成的主要是：

Web.config is configured to use basicHttpBinding since Silverlight does not support ws*. 
ASP compatibility mode: <serviceHostingEnvironment aspNetCompatibilityEnabled="true"/>

因此，将您的服务转换为使用 basicHttpBinding 是一个好的开始。查看Configuring Services Using Configuration Files 了解更多关于适用于服务的 web.config 部分的信息。

使用Silverlight enabled WCF Service Template is Bad Practice中描述的模板可能会失去一些灵活性

【讨论】：

【解决方案2】：

手头好像有别的问题，这里回答了

can i use a generic list in a WCF called from silverlight?

【讨论】：