是否可以使用客户端的通用DataContract？ [英] Is it possible to use generic DataContract's from the client end?

问题描述

我知道当你创建一个服务时，你可以创建一个通用的DataContract：

  [DataContract（Name =Get {0 } Request）
 public sealed class GetItemRequest< T> 
其中T：class，new（）{...} 
 
 [DataContract（Name =Get {0} Response）
 public sealed class GetItemResponse< T> 
其中T：class，new（）{...} 
 
 [ServiceContract] 
 public void MyService：IMyService 
 {
 [OperationContract] 
 GetItemResponse< Foo> GetItem（GetItemRequest< Foo>请求）; 
} 
  

这会生成一个 GetFooRequest 和 GetFooResponse 定义我的WSDL。现在，我很好奇的是，如果有可能走向另一个方向吗？

是否可以创建一个使用通用DataContracts并通过这些到服务器作为具体的对象？我在添加Service Reference之后尝试了这一点，但实际上效果并不好。所以，这更多的是我想知道是否有任何方法（即使这意味着不添加服务引用）来做到这一点？

解决方案

<最终，WCF将会看看合同类。如果是从WSDL / MEX生成的，它不会有这个（因为这不是它在元数据中的表达方式） - 但是如果你的客户端有上面的代码，那么确定它应该可以正常工作。

如果您从客户端向您的DTO dll添加一个库引用（即dll /项目引用），并确保WCF启用了共享程序集，应该管用。如果它仍然阻止，那么作弊：使用服务引用来获取配置数据。然后删除服务引用，但保留配置（否则这些配置文件是一种痛苦）。然后它应该从库中找到类型。

I know when you create a service you can create a generic DataContract:

[DataContract(Name = "Get{0}Request")
public sealed class GetItemRequest<T>
    where T : class, new() { ... }

[DataContract(Name = "Get{0}Response")
public sealed class GetItemResponse<T>
    where T : class, new() { ... }

[ServiceContract]
public void MyService : IMyService
{
    [OperationContract]
    GetItemResponse<Foo> GetItem(GetItemRequest<Foo> request);
}

This generates a GetFooRequest and GetFooResponse definition for my WSDL. Now, what I'm curious about is if it is possible to go in the other direction?

Is it possible to create a client that uses the Generic DataContracts and pass those to the server as a concrete object? I attempted this after adding a Service Reference and it didn't really work out so well. So this is more of me wondering if there is any way (even if it means not adding a Service Reference) to do this?

解决方案

Ultimately, WCF is going to look at the contract class. If that is generated from WSDL/MEX it won't have this (since this isn't how it is expressed in the metadata) - but if your client has the code as above, then sure it should work fine.

If you add a library reference (i.e. a dll / project reference) to your DTO dll from the client, and ensure WCF has shared-assemblies enabled, it should work. If it still baulks, then cheat: use a service reference just to get the config data. Then delete the service reference but keep the configuration (those config files are a pain otherwise). Then it should locate the type from the library.

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