Signalr参考缺失

Question

我有一个Windows服务应用程序，用于承载Signalr集线器，但是在构建时，尽管启用了nuget软件包还原，但总是显示一些DLL丢失。

我的 package.config

<packages>
  <package id="jQuery" version="1.6.4" targetFramework="net452" />
  <package id="Microsoft.AspNet.Cors" version="5.0.0" targetFramework="net452" />
  <package id="Microsoft.AspNet.SignalR" version="2.3.0" targetFramework="net452" />
  <package id="Microsoft.AspNet.SignalR.Core" version="2.3.0" targetFramework="net452" />
  <package id="Microsoft.AspNet.SignalR.JS" version="2.3.0" targetFramework="net452" />
  <package id="Microsoft.AspNet.SignalR.SelfHost" version="2.3.0" targetFramework="net452" />
  <package id="Microsoft.AspNet.SignalR.SystemWeb" version="2.3.0" targetFramework="net452" />
  <package id="Microsoft.Owin" version="4.0.0" targetFramework="net452" />
  <package id="Microsoft.Owin.Cors" version="4.0.0" targetFramework="net452" />
  <package id="Microsoft.Owin.Diagnostics" version="2.1.0" targetFramework="net452" />
  <package id="Microsoft.Owin.Host.HttpListener" version="4.0.0" targetFramework="net452" />
  <package id="Microsoft.Owin.Host.SystemWeb" version="2.1.0" targetFramework="net452" />
  <package id="Microsoft.Owin.Hosting" version="4.0.0" targetFramework="net452" />
  <package id="Microsoft.Owin.Security" version="4.0.0" targetFramework="net452" />
  <package id="Microsoft.Owin.SelfHost" version="2.1.0" targetFramework="net452" />

  <package id="Owin" version="1.0" targetFramework="net452" />
</packages>

缺少DLL

Answer 1

发生这种情况时，这是Visual Studio缓存问题。只需单击缺少的Dll并稍等一下，问题通常就会消失。