我已经实现了一个由WCF测试客户端成功反序列化的数据协定 . 现在，我如何在我制作的自定义客户端中执行此操作？
我的 Contract 是这样的：
[ServiceContract]
[ServiceKnownType(typeof(List<StageContract>))]
public interface IUserService
{
[OperationContract]
void CreateUser(string name, string pwd, bool admin);
[OperationContract]
bool LogInUser(string name, string pwd);
[OperationContract]
List<StageContract> getAllStages();
[DataContract]
public class StageContract
{
private int _stageID;
private int _projectID;
private int _wip;
private string _name;
private int _position;
public StageContract(Stage s)
{
StageID = s.ID;
ProjectID = s.ProjectID;
WIP = s.WIP;
Name = s.Name;
Position = s.Position;
}
[DataMember]
int StageID
{
get { return _stageID; }
set { _stageID = value; }
}
[DataMember]
int ProjectID
{
get { return _projectID; }
set { _projectID = value; }
}
[DataMember]
int WIP
{
get { return _wip; }
set { _wip = value; }
}
[DataMember]
string Name
{
get { return _name; }
set { _name = value; }
}
[DataMember]
int Position
{
get { return _position; }
set { _position = value; }
}
}
}
服务类具有以下内容：
public List<StageContract> getAllStages()
{
return (new StageController())
.getAllStages()
.Values
.Select(s => new StageContract(s))
.ToList();
}
在客户端：
using System.Collections.Generic;
using System.Windows;
using System.Windows.Controls;
using KanbanProject.ServiceReference1;
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
this.Loaded += new RoutedEventHandler(MainWindow_Loaded);
}
void MainWindow_Loaded(object sender, RoutedEventArgs e)
{
var client = new UserServiceClient();
List<StageContract> myList = client.getAllStages();
}
在执行时我遇到以下错误：
An unhandled exception of type 'System.ServiceModel.Dispatcher.NetDispatcherFaultException'
occurred in mscorlib.dll
Additional information: The formatter
threw an exception while trying to deserialize
the message: There was an error while trying to
deserialize parameter http://tempuri.org/:getAllStagesResult.
The InnerException message was 'Element getAllStagesResult from
namespace http://tempuri.org/ cannot have child contents to be
deserialized as an object. Please use XmlNode[] to deserialize
this pattern of XML.'. Please see InnerException for more details.
我试过调查XmlNode []用法：http://geekswithblogs.net/TimH/archive/2006/02/09/68857.aspx
这也是：WCF: Serializing and Deserializing generic collections
这：WCF. IList is deserialized as array. How to make it be any writable list (ArrayList)?
这个：WCF/RESTful DataContract deserialization issue
先感谢您！
*更新：在客户端最终反序列化后，我遇到以下情况：
For List<StageContract> myList = client.getAllStages(); I have Cannot implicitly convert type "object" to "System.Colections.Generic.List<StageContract>" An explicit conversion exists(are you missing a cast?).
*已解决：答案发布在下面 .
2 回答
将
[ServiceKnownType(typeof(List<StageContract>))]更改为[ServiceKnownType(typeof(StageContract))]. 您永远不必识别List<T>...仅T. 在您的情况下，T仍然不在KnownTypes中 .解决了它：问题是ServiceReference配置集合类型 . 即使我之前更改了它
System.Collections.Generic.List，我还是留下了Always generate message contracts，这反过来因为某种原因没有让StageContract类型得到识别 .谢谢@jstreet和@Clay！