如何从 .Net Core 项目中调用经典的 NetFramework 库方法

Question

我有一个非常简单的 asp.net 核心项目和一个内置于 .net 框架 4.6.1 的类库 我已经在 asp.net 核心项目中导入了该库，但我无法使用它。 如果在控制器中（例如）我写：

使用 ClassLibrary1；

出现一个弹出窗口：

命名空间 ClassLibrary1 WebApplication1.Net Framework 4.6.1 - 可用 WebApplication1.NetCoreApp，版本 1.0 - 不可用

如何在 asp.net 核心项目中使用我的类库对象和方法？

---

感谢您的回复，但对我不起作用。

这是我的 project.json

{
  "dependencies": {
    "Microsoft.ApplicationInsights.AspNetCore": "1.0.0",
    "Microsoft.AspNetCore.Diagnostics": "1.0.0",
    "Microsoft.AspNetCore.Mvc": "1.0.1",
    "Microsoft.AspNetCore.Razor.Tools": {
      "version": "1.0.0-preview2-final",
      "type": "build"
    },
    "Microsoft.AspNetCore.Routing": "1.0.1",
    "Microsoft.AspNetCore.Server.IISIntegration": "1.0.0",
    "Microsoft.AspNetCore.Server.Kestrel": "1.0.1",
    "Microsoft.AspNetCore.StaticFiles": "1.0.0",
    "Microsoft.Extensions.Configuration.EnvironmentVariables": "1.0.0",
    "Microsoft.Extensions.Configuration.Json": "1.0.0",
    "Microsoft.Extensions.Logging": "1.0.0",
    "Microsoft.Extensions.Logging.Console": "1.0.0",
    "Microsoft.Extensions.Logging.Debug": "1.0.0",
    "Microsoft.Extensions.Options.ConfigurationExtensions": "1.0.0",
    "Microsoft.VisualStudio.Web.BrowserLink.Loader": "14.0.0"
  },

  "tools": {
    "BundlerMinifier.Core": "2.0.238",
    "Microsoft.AspNetCore.Razor.Tools": "1.0.0-preview2-final",
    "Microsoft.AspNetCore.Server.IISIntegration.Tools": "1.0.0-preview2-final"
  },

  "frameworks": {
    "net461": {
      "dependencies": {
        "ClassLibrary1": {
          "target": "project"
        }
      }
    },
    "netcoreapp1.0": {
      "dependencies": {
        "Microsoft.NETCore.App": {
          "version": "1.0.1",
          "type": "platform"
        }
      },
      "imports": [
        "dotnet5.6",
        "portable-net45+win8"
      ]
    }
  },

  "buildOptions": {
    "emitEntryPoint": true,
    "preserveCompilationContext": true
  },

  "runtimeOptions": {
    "configProperties": {
      "System.GC.Server": true
    }
  },

  "publishOptions": {
    "include": [
      "wwwroot",
      "**/*.cshtml",
      "appsettings.json",
      "web.config"
    ]
  },

  "scripts": {
    "prepublish": [ "bower install", "dotnet bundle" ],
    "postpublish": [ "dotnet publish-iis --publish-folder %publish:OutputPath% --framework %publish:FullTargetFramework%" ]
  }
}

这里是我的项目文件 1

但在 Homecontroller 中我收到此错误 2

怎么了？

Answer 1

您的库应该支持 netcoreapp1.0 或者您的网站应该支持 net461（或两者都支持）。更新你的 project.json ：

"frameworks": {
    "net461": {
    },
    "netcoreapp1.0": {
      "dependencies": {
        "Microsoft.NETCore.App": {
            "version": "1.0.0",
            "type": "platform"
        }
      }
    }
  }