我为什么会收到错误信息“类型'IReturn<>'在未引用的程序集中定义“组件”。在VIsualStudio 2017中使用ServiceStack [英] Why am I getting error "The type 'IReturn<>' is defined in an assembly that is not referenced" using ServiceStack in VIsualStudio 2017

查看：137 发布时间：2020/5/30 19:40:42 c# .net servicestack

本文介绍了我为什么会收到错误信息“类型'IReturn<>'在未引用的程序集中定义“组件”。在VIsualStudio 2017中使用ServiceStack的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我正在运行Visual Studio 2017 15.6.3。

I am running Visual Studio 2017 15.6.3.

我有一个.NET Standard 2.0 DLL项目，其中包含与ServiceStack一起使用的Request和Response类。 Request类实现IReturn<>。

I have a .NET Standard 2.0 DLL project which contains Request and Response classes for use with ServiceStack. The Request classes implement IReturn<>.

我有一个.NET Core 2.0控制台EXE项目，该项目引用了.NET Standard DLL。该EXE使用ServiceStack JsonServiceClient将请求发送到ServiceStack服务。

I have a .NET Core 2.0 console EXE project which references the .NET Standard DLL. This EXE uses a ServiceStack JsonServiceClient to send requests to a ServiceStack service. It compiles and works fine.

我添加了一个.NET Framework 4.6.1控制台EXE项目，该项目也引用了.NET Standard 2.0 DLL。它必须是Framework应用程序，因为它引用了与Core或Standard不兼容的其他DLL。该EXE使用ServiceStack JsonServiceClient将请求发送到与.NET Core EXE完全相同的ServiceStack服务，但是该程序无法编译。 Framework 4.6.1应该支持.NET Standard 2.0 DLL，但是由于某种原因，它与IReturn<>接口存在冲突。

I added a .NET Framework 4.6.1 console EXE project which also references the .NET Standard 2.0 DLL. It has to be a Framework app because it references other DLLs which are not compatible with Core or Standard. This EXE uses a ServiceStack JsonServiceClient to send requests to a ServiceStack service exactly like the .NET Core EXE, but this program will not compile. Framework 4.6.1 is supposed to support .NET Standard 2.0 DLLs, but for some reason it has a conflict with the IReturn<> interface.

  var extentRequest = new ExtentRequest { ... };
  using (var client = new JsonServiceClient(baseUrl))
  {
    return client.Post(extentRequest);
  }

返回的错误是：类型'IReturn<>'在您必须添加对程序集'ServiceStack.Interfaces，Version = 5.0.0.0，Culture = neutral，PublicKeyToken = null'的引用。

The error returned is: "The type 'IReturn<>' is defined in an assembly that is not referenced. You must add a reference to assembly 'ServiceStack.Interfaces, Version=5.0.0.0, Culture=neutral, PublicKeyToken=null'."

我想不出它为什么不起作用的任何原因：

I can't think of any reason why it isn't working:

当我查看该项目的引用列表时，请参阅ServiceStack.Interfaces及其属性，说它是5.0.0.0版。

我可以在Framework可执行项目代码中使用窥视定义，并按照继承链的方式来查找IReturn<>，以便它知道类型。

所有三个项目都使用通过NuGet获得的ServiceStack版本5.0.2。

所有项目都针对x64配置和编译。

When I look at the list of References for the project, I see ServiceStack.Interfaces and its Properties say it is version 5.0.0.0.
I can use "Peek Definition" within the Framework executable project code and work my way through the chain of inheritance to find IReturn<> so it knows the type.
All three projects use ServiceStack version 5.0.2 acquired with NuGet.
All projects are configured and compiled for x64.

我认为问题是Framework版本和Standard版本之间的某种不匹配。谁能告诉我为什么会出现此错误？

I assume the problem is some sort of mismatch between Framework and Standard versions. Can anyone tell me why I'm getting this error?

我为什么会收到错误信息“类型'IReturn<>'在未引用的程序集中定义“组件”。在VIsualStudio 2017中使用ServiceStack [英] Why am I getting error "The type 'IReturn<>' is defined in an assembly that is not referenced" using ServiceStack in VIsualStudio 2017

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