c# -设计问题建议:不能使用字典，那又怎样?

我需要通过web服务返回字典(或一些列表，我只是不知道)，特别是通过WCF数据服务。看起来WCF数据服务不支持字典类型。

通过web服务显示如下:

<?xml version="1.0" encoding="utf-8" standalone="yes" ?> 
- <Employees xmlns="http://schemas.microsoft.com/ado/2007/08/dataservices">
    <element>employee1, True</element> 
    <element>employee2, False</element>
    <element>employee3, True</element>
  </Employees>

我首先尝试了一个一维数组，这似乎工作，但当然只带来了那些一维数组与3个元素:

[WebGet]
public string[] Employees()
{
   return new[]
   {
        "employee1",
        "employee2",
        "employee3"
   };
}

基本上，我需要一些List(?)，每个List都有两个参数，即EmployeeName和一个布尔值IsActive。

如有任何建议，我将不胜感激。

更新:我在我的web服务中添加了以下内容:

public class Employee
    {
        public string Name{ get; set; }
        public bool IsActive{ get; set; }
        public Employee(string name, bool isActive)
        {
            Name = name;
            IsActive = isActive;
        }
    }
[WebGet]
        public List<Employee> Employees()
        {
            var emp1 = new Employee("Test1", true);
            var emp2 = new Employee("Test2", true);
            var list = new List<Employee> { emp1, emp2 };
            return list;
        }

当像。svc文件通过我的web浏览器，我得到这个加载:

Request Error
The server encountered an error processing the request. The exception message is 'Unable to load metadata for return type 'System.Collections.Generic.List`1[Web.Employee]' of method 'System.Collections.Generic.List`1[.Web.Employee] Employees()'.'. See server logs for more details. The exception stack trace is: 
at System.Data.Services.Providers.BaseServiceProvider.AddServiceOperation(MethodInfo method, String protocolMethod) at System.Data.Services.Providers.BaseServiceProvider.AddOperationsFromType(Type type) at System.Data.Services.DataService`1.CreateProvider() at System.Data.Services.DataService`1.HandleRequest() at System.Data.Services.DataService`1.ProcessRequestForMessage(Stream messageBody) at SyncInvokeProcessRequestForMessage(Object , Object[] , Object[] ) at System.ServiceModel.Dispatcher.SyncMethodInvoker.Invoke(Object instance, Object[] inputs, Object[]& outputs) at System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage41(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage4(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage31(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage3(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage2(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage11(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage1(MessageRpc& rpc) at System.ServiceModel.Dispatcher.MessageRpc.Process(Boolean isOperationContextSet)

任何想法?

更新2:

这里是关于我的DataService的更多信息。svc类。我正在使用。net 4.0框架下的WCF数据服务V2:

public class WebDataService : DataService<MyModelEntities>
    {
        public static void InitializeService(DataServiceConfiguration config)
        {
            config.UseVerboseErrors = true;
            config.SetServiceOperationAccessRule("*", ServiceOperationRights.All);
            config.SetEntitySetAccessRule("*", EntitySetRights.AllRead | EntitySetRights.AllWrite);
            config.DataServiceBehavior.MaxProtocolVersion = DataServiceProtocolVersion.V2;
        }

public class MySillyWCFObject
{ 
 boolean b;
 string name;
 public MySillyWCFObject(boolean b, string s)
  {
   this.b = b;
   this.name = s;
  }
}

MySillyWCFObject m = new MySillyWCFObject(true, "Hi");

var tuple = Tuple.Create(true, "Hi");

[DataContract]
public class EmployeeDTO {
public EmployeeDTO(string empName,bool isActive){
   EmployeeName = empName;
   IsActive = isActive;
}
[DataMember]
public string EmployeeName {get;private set;}
[DataMember]
public bool IsActive {get;private set;}
}

[WebGet]
public EmployeeDTO[] Employees(){
 return new []{new EmployeeDTO("employee1",true),
               new EmployeeDTO("employee2",false),
               new EmployeeDTO("employee3",true),};
}