"类型或命名空间名称找不到"在ASP.NET 1.0的核心RC2 [英] "The type or namespace name could not be found" in ASP.NET Core 1.0 RC2

问题描述

我目前正在试用ASP.NET Core 1.0 RC2。我创建了它作为一个.NET框架项目（而不是一个.NET核心项目），并添加引用到我们的模型库，使用.NET Framework 4.5，通过项目引用：

I'm currently trying ASP.NET Core 1.0 RC2. I've created it as a .NET Framework project (as opposed to a .NET Core project) and added references to our Models library, using .NET Framework 4.5, via a project reference:

"frameworks": {
  "net46": {
    "dependencies": {
      "Project.Core": {
        "target": "project"
      },
      "Project.DataAccess": {
        "target": "project"
      },
      "Project.Encryption": {
        "target": "project"
      },
      "Project.Models": {
        "target": "project"
      },
      "Project.Resources": {
        "target": "project"
      }
    }
  }
},

现在在我的视图中添加模型指令时，会发生以下错误： / p>

Now when adding a model directive to my view, the following error occurs:

@model System.Collections.Generic.List<Project.Models.User>

The type or namespace name 'Project' could not be found (are you missing a using directive or an assembly reference?)
    public class _Views_Home_Index_cshtml : Microsoft.AspNetCore.Mvc.Razor.RazorPage<System.Collections.Generic.List<Project.Models.User>>
The type or namespace name 'Project' could not be found (are you missing a using directive or an assembly reference?)
        public Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<System.Collections.Generic.List<Project.Models.User>> Html { get; private set; }

它也显示在intellisense中：无法解析标签'Project.Models.User' / em>无法解析符号模型

It also displays in intellisense: Cannot resolve tag 'Project.Models.User' and Cannot resolve symbol 'model'

我已添加项目引用，添加了using语句...仍然出现此错误中。为什么呢？

I have added a project reference, added a using statement... Still this error occurs. Why is that?

推荐答案

这是RC2中的一个错误有一个开放问题。问题讨论中对我有效的解决方法是：

This is a bug in RC2 with an open issue. A workaround in the issue discussion that works for me is:

services.AddMvc()
.AddRazorOptions(options =>
{
    var previous = options.CompilationCallback;
    options.CompilationCallback = context =>
    {
        previous?.Invoke(context);
        context.Compilation = context.Compilation.AddReferences(MetadataReference.CreateFromFile(typeof(MyClass).Assembly.Location));
    };
    });

在您的示例中，您需要为 Project.Models .User 。

In your example, you'd need to do this for Project.Models.User.

不确定 4.6。 1和更新2需要两个项目，我只尝试了。

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