WCF对Collection&Dictionary的支持

namespace Artech.SpecialDataContract.Contract 
{ 
[DataContract] 
public class Order 
{ 
[DataMember] 
public Guid OrderID 
{ get; set; } 

[DataMember] 
public DateTime OrderDate 
{ get; set; } 
} 

public class OrderCollection : List<Order> 
{ 

} 
} 

namespace Artech.SpecialDataContract.Contract 
{ 
[ServiceContract] 
public interface IOrderManager 
{ 
[OperationContract(Name = "ProcessWithCollection")] 
void Process(OrderCollection orders); 
} 

<?xml version="1.0" encoding="utf-8" ?> 
<xs:schema elementFormDefault="qualified" targetNamespace="http://schemas.datacontract.org/2004/07/Artech.SpecialDataContract.Contract" 
xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:tns="http://schemas.datacontract.org/2004/07/Artech.SpecialDataContract.Contract" 
xmlns:ser="http://schemas.microsoft.com/2003/10/Serialization/"> 
<xs:import schemaLocation="http://artech/Artech.SpecialDataContract/OrderManagerService.svc?xsd=xsd1" 
namespace="http://schemas.microsoft.com/2003/10/Serialization/" /> 
<xs:complexType name="ArrayOfOrder"> 
<xs:sequence> 
<xs:element minOccurs="0" maxOccurs="unbounded" name="Order" nillable="true" type="tns:Order" /> 
</xs:sequence> 
</xs:complexType> 
<xs:element name="ArrayOfOrder" nillable="true" type="tns:ArrayOfOrder"/> 
<xs:complexType 
name="Order"> 
<xs:sequence> 
<xs:element minOccurs="0" name="OrderDate" type="xs:dateTime"/> 
<xs:element 
minOccurs="0" name="OrderID" type="ser:guid"/> 
</xs:sequence> 
</xs:complexType> 
<xs:element 
name="Order" nillable="true" type="tns:Order"/> 
</xs:schema> 

[System.CodeDom.Compiler.GeneratedCodeAttribute("System.ServiceModel", "3.0.0.0")] 
[System.ServiceModel.ServiceContractAttribute(ConfigurationName="OrderManagerService.IOrderManager")] 
public interface IOrderManager { 
[System.ServiceModel.OperationContractAttribute(Action="http://tempuri.org/IOrderManager/ProcessWithCollection", ReplyAction="http://tempuri.org/IOrderManager/ProcessWithCollectionResponse")] 
void ProcessWithCollection(Artech.SpecialDataContract.Client.OrderManagerService.Order[] orders); 
}