.net 我如何获得 System.Web.Http.Owin？
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How do I get System.Web.Http.Owin?
提问by spiderplant0
I had a version number problem with system.web.http.owin.
我有一个 system.web.http.owin 的版本号问题。
So I removed it from my projects package references, with the idea that I would re-added it to see if it fixed the problem. However it has disappeared completely. I.e. in visual studio if I go:
所以我从我的项目包引用中删除了它，我的想法是重新添加它以查看它是否解决了问题。然而它已经完全消失了。如果我去，即在视觉工作室：
solution explorer > myProject > references > RMC > add reference >
解决方案资源管理器 > myProject > 参考 > RMC > 添加参考 >
and then search for system.web.http.owinit doesn't appear.
然后搜索system.web.http.owin它没有出现。
Any ideas what has gone wrong or what package I need to install to make it re-appear.
任何想法出了什么问题，或者我需要安装什么包才能让它重新出现。
My original error message...
我原来的错误信息...
Error 7 Assembly 'System.Web.Http.Owin, Version=5.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' uses 'System.Web.Http, Version=5.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' which has a higher version than referenced assembly 'System.Web.Http, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' e:\user\project1\src\packages\Microsoft.AspNet.WebApi.Owin.5.1.1\lib\net45\System.Web.Http.Owin.dll Smots.Core
错误 7 程序集“System.Web.Http.Owin，Version=5.1.0.0，Culture=neutral，PublicKeyToken=31bf3856ad364e35”使用“System.Web.Http，Version=5.1.0.0，Culture=neutral，PublicKeyToken=31bf3856ad364e35”比引用的程序集 'System.Web.Http, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' e:\user\project1\src\packages\Microsoft.AspNet.WebApi.Owin.5.1.1\ 更高的版本lib\net45\System.Web.Http.Owin.dll Smots.Core
回答by Wallace Kelly
The NuGet package Microsoft.AspNet.WebApi.Owincontains that DLL.
NuGet 包Microsoft.AspNet.WebApi.Owin包含该 DLL。
You can install it by right-clicking on the References folder of your project and selecting "Manage NuGet Packages..." and searching for "Microsoft.AspNet.WebApi.Owin". Or you can use the Package Manager Console and type the following:
您可以通过右键单击项目的 References 文件夹并选择“Manage NuGet Packages...”并搜索“Microsoft.AspNet.WebApi.Owin”来安装它。或者您可以使用包管理器控制台并键入以下内容：
Install-Package Microsoft.AspNet.WebApi.Owin
If you use the Package Manager Console within Visual Studio, be sure you have the intended project selected in the drop down labeled "Default project:" That is easy to overlook.
如果您在 Visual Studio 中使用包管理器控制台，请确保在标有“默认项目：”的下拉菜单中选择了预期的项目，这很容易被忽视。
