title: Error CS0234: The type or namespace name 'AspNetCore' does not exist in the namespace 'Microsoft' (are you missing an assembly reference?)
body: <p>I'm trying to upgrade the following template project to ASP.NET Core 1.1:
  <a href="https://github.com/wilanbigay/aspnet-core-aurelia-typescript-starter" rel="noreferrer">https://github.com/wilanbigay/aspnet-core-aurelia-typescript-starter</a></p>
  
  <p>After running dotnet migrate the project.json file has been dropped in favour of the new csproj file.</p>
  
  <p>Using Visual Studio Code and the Nuget4Code extension I've upgraded all components to ASP.NET Core 1.1.</p>
  
  <p>The CsProj now contains entries like so:</p>
  
  <pre><code>&lt;ItemGroup&gt;
      &lt;PackageReference Include="Microsoft.NET.Sdk"&gt;
        &lt;Version&gt;1.0.0-alpha-20161104-2&lt;/Version&gt;
        &lt;PrivateAssets&gt;All&lt;/PrivateAssets&gt;
      &lt;/PackageReference&gt;
      &lt;PackageReference Include="Microsoft.NET.Sdk.Web"&gt;
        &lt;Version&gt;1.0.0-alpha-20161104-2&lt;/Version&gt;
        &lt;PrivateAssets&gt;All&lt;/PrivateAssets&gt;
      &lt;/PackageReference&gt;
      &lt;PackageReference Include="Microsoft.NETCore.App"&gt;
        &lt;Version&gt;1.1.0&lt;/Version&gt;
      &lt;/PackageReference&gt;
      &lt;PackageReference Include="Microsoft.AspNetCore.Mvc"&gt;
        &lt;Version&gt;1.1.0&lt;/Version&gt;
      &lt;/PackageReference&gt;
  </code></pre>
  
  <p>However I have compilation issues.  It seems the AspNetCore namespace can't be found.  I'm getting the error</p>
  
  <blockquote>
    <p>Error CS0234: The type or namespace name 'AspNetCore' does not exist in the names pace 'Microsoft' (are you missing an assembly reference?) </p>
  </blockquote>
  
  <p>I'm not sure how I can check references like I used to be able to in Visual Studio in the references section.
  How can I resolve this?</p>