C# 我是否应该将所有WCF服务代码包装在一个try-catch块中？

我应该用试一试的方式来包装，还是你推荐什么？我将WCF与rest-ful JSON服务一起使用，您可以这样做，但最好是实现并使用您的服务，这将允许在一个地方处理未处理的异常，因此您可以在那里创建一个错误异常，以将详细信息返回给用户

try
{
    ///// here is the code that might throw erros. If I discover the user is unauthorized I throw a WebFaultException myself to alert the client
}      
catch (WebFaultException ex)
{
    throw ex; //but if I wrap all code in try-catch, I have to rethrow the exception o the status code reaches the client
}
catch (Exception ex)
{
    throw new WebFaultException(ex.Message, HttpStatusCode.InternalServerError);
}

然后，要创建一个使用此选项的行为：

ErrorHandler : IErrorHandler
{
... just implement the handling of errors here, however you want to handle them
}

如果要通过配置添加，则需要以下选项之一：

 myServiceHost.Description.Behaviors.Add (new ErrorHandlerBehavior ());

然后是配置：

public class ErrorHandlerElement : BehaviorExtensionElement
    {
    public override Type BehaviorType
        {
        get { return typeof (ErrorHandlerBehavior); }
        }

    protected override object CreateBehavior ()
        {
        return new ErrorHandlerBehavior ();
        }
    }
}

---

@EtherDragon链接的示例显示了如何以编程方式添加行为。

public class ErrorHandlerElement : BehaviorExtensionElement
    {
    public override Type BehaviorType
        {
        get { return typeof (ErrorHandlerBehavior); }
        }

    protected override object CreateBehavior ()
        {
        return new ErrorHandlerBehavior ();
        }
    }
}

<system.serviceModel>
<extensions>
  <behaviorExtensions>
    <add name="ErrorLogging" type="ErrorHandlerBehavior, ErrorHandling, Version=1.0.0.0, Culture=neutral, PublicKeyToken=<whatever>" />
  </behaviorExtensions>
</extensions>
<bindings>
  <basicHttpBinding>
    <binding name="basicBinding">
    </binding>
  </basicHttpBinding>
</bindings>
<services>
  <service behaviorConfiguration="Service1Behavior" name="Service">
    <endpoint address="" binding="basicHttpBinding"  bindingConfiguration="basicBinding" contract="Service" />
  </service>
</services>
<behaviors>
  <serviceBehaviors>
    <behavior name="Service1Behavior">
      <serviceMetadata httpGetUrl="" httpGetEnabled="true" />
      <serviceDebug includeExceptionDetailInFaults="false" />
      <ErrorLogging />  <--this adds the behaviour to the service behaviours -->
    </behavior>
  </serviceBehaviors>
</behaviors>