我的RESTUL WCF没有'；工作不正常

我有以下内容：

In Competitions.svc:
<%@ ServiceHost Language="C#" Debug="true" Service="MySite_WebSite.Pages.Client.CompetitionsSVC" CodeBehind="Competitions.svc.cs" %>

在ICompetitions.cs:中

namespace MySite_WebSite.Pages.Client
{
    // NOTE: You can use the "Rename" command on the "Refactor" menu to change the interface name "ICompetitions" in both code and config file together.
    [ServiceContract(Name="CompetitionsSVC")]
    public interface ICompetitions
    {
        [OperationContract]
        [WebInvoke(
            Method = "GET"
            , RequestFormat = WebMessageFormat.Json
            , ResponseFormat = WebMessageFormat.Json
            , UriTemplate = "DoWork"
            , BodyStyle=WebMessageBodyStyle.Wrapped
        )]
        Dictionary<DateTime, List<Competitions.Entry>> DoWork();
    }
}

在竞争中.svc.cs:

namespace MySite_WebSite.Pages.Client
{
    [DataContract]
    [AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Required)]
    public class CompetitionsSVC : ICompetitions
    {
        #region ICompetitions Members
        public Dictionary<DateTime, List<Competitions.Entry>> DoWork()
        {
            var c = new Competitions();
            return c.GetMonthlyEntries(new Competitions.ParamGetMonthlyEntries()
            {
                Start = DateTime.Now.Date.AddMonths(-1)
                , End = DateTime.Now.Date.AddMonths(2)
                , UserLang = "fr-BE"
                , ActiveLang = "fr-BE"
                , IsExternal = false
            });
        }
        #endregion
    }
}

在Web.config中：

  <system.serviceModel>
    <services>
      <service name="MySite_WebSite.WS.WCF.SubsetMID">
        <endpoint address=""
                  binding="wsHttpBinding"
                  contract="MySite_WebSite.WS.WCF.ISubsetMID" />
        <endpoint address="mex"
                  binding="mexHttpBinding"
                  contract="IMetadataExchange" />
      </service>
      <service name="MySite_WebSite.Pages.Client.CompetitionsSVC">
        <endpoint address=""
                  binding="webHttpBinding"
                  behaviorConfiguration="WebBehavior"
                  contract="MySite_WebSite.Pages.Client.ICompetitions" />
        <endpoint address="mex"
                  binding="mexHttpBinding"
                  contract="IMetadataExchange" />
      </service>
    </services>
    <bindings>
      <wsHttpBinding>
        <binding>
          <security mode="None"/>
        </binding>
      </wsHttpBinding>
      <netTcpBinding>
        <binding name="NetTcpBinding_IServiceWCallBack" sendTimeout="00:10:00"
          maxBufferSize="2147483647" maxReceivedMessageSize="2147483647">
          <readerQuotas maxStringContentLength="2147483647" />
          <security mode="None" />
        </binding>
        <binding name="NetTcpBinding_IHandleSubset">
          <security mode="None" />
        </binding>
      </netTcpBinding>
    </bindings>
    <behaviors>
      <serviceBehaviors>
        <behavior>
          <serviceMetadata httpGetEnabled="true" />
        </behavior>
      </serviceBehaviors>
      <endpointBehaviors>
        <behavior name="WebBehavior">
          <webHttp />
        </behavior>
      </endpointBehaviors>
    </behaviors>
    <serviceHostingEnvironment
        multipleSiteBindingsEnabled="true"
        aspNetCompatibilityEnabled="true"
    />
  </system.serviceModel>

当我输入url 时

localhost2/MySite_WebSite/Pages/Client/Competitions.svc/DoWork

，它不起作用。我在方法的开头有一个断点，我可以看到该方法被调用了两次，但它没有返回任何内容（我甚至不认为它会发回任何HTTP代码）。

我做错了什么？

附加说明：

Entry实际上是一个"基类"。

    public class EntryCompetition : Entry
    public class EntryEvent : Entry

在我的代码中，字典实际上包含EntryCompetition和EntryEvent实例。