Question

我有一个我正在处理的ASP.NET核心/ MVC核心应用程序，但是当我第一次将项目加载到Visual Studio中时，需要花费很长时间才能加载（20分钟）。

我不确定是什么导致了扩展加载时间，但它不是Visual Studio本身，因为其他项目加载速度更快，我很确定它与这个单独的项目有关，因为它曾经工作正常，并且我已经在另一台笔记本电脑上尝试过，它也花时间在那里。

我也尝试使用/ SafeMode开关启动Visual Studio，但这没有任何区别。

我正在使用Visual Studio 2015 Enterprise

以下是我的project.json的副本，以防有人可以识别它的潜在问题

{
  "devDependencies": {
    "gulp": "3.9.1"
  },

  "userSecretsId": "SP2017-5731e8a3-a3ec-4a25-bcb5-asdf2432hjk232",

  "dependencies": {
    "Microsoft.NETCore.App": {
      "version": "1.0.1",
      "type": "platform"
    },
    "Microsoft.ApplicationInsights.AspNetCore": "1.0.0",
    "Microsoft.AspNetCore.Authentication.Cookies": "1.0.0",
    "Microsoft.AspNetCore.Diagnostics": "1.0.0",
    "Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore": "1.0.0",
    "Microsoft.AspNetCore.Identity.EntityFrameworkCore": "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",
    "MySql.Data.EntityFrameworkCore": "7.0.6-IR31",
    "Microsoft.EntityFrameworkCore.SqlServer": "1.0.1",
    "Microsoft.EntityFrameworkCore.SqlServer.Design": {
      "version": "1.0.1",
      "type": "build"
    },
    "Microsoft.EntityFrameworkCore.Tools": {
      "version": "1.0.0-preview2-final",
      "type": "build"
    },
    "Microsoft.Extensions.Configuration.EnvironmentVariables": "1.0.0",
    "Microsoft.Extensions.Configuration.Json": "1.0.0",
    "Microsoft.Extensions.Configuration.UserSecrets": "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",
    "Microsoft.VisualStudio.Web.CodeGeneration.Tools": {
      "version": "1.0.0-preview2-final",
      "type": "build"
    },
    "Microsoft.VisualStudio.Web.CodeGenerators.Mvc": {
      "version": "1.0.0-preview2-final",
      "type": "build"
    },
    "SendGrid.Core": "1.0.0",
    "SendGrid.NetCore": "1.0.0-rtm-00002"
  },

  "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",
    "Microsoft.EntityFrameworkCore.Tools": "1.0.0-preview2-final",
    "Microsoft.Extensions.SecretManager.Tools": "1.0.0-preview2-final",
    "Microsoft.VisualStudio.Web.CodeGeneration.Tools": {
      "version": "1.0.0-preview2-final",
      "imports": [
        "portable-net45+win8"
      ]
    }
  },

  "frameworks": {
    "netcoreapp1.0": {
      "imports": [
        "dotnet5.6",
        "portable-net45+win8"
      ]
    }
  },

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

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

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

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

编辑12 / Jan / 17 00:30 GMT：

一个新的简单的ASP.NET CORE MVC网站很快就开启了
我正在运行 Visual Studio 2015 Update 3
我在 Surface Pro 4 i7 / 16GB / 512GB SSD上运行
我已经在安全模式下运行Visual Studio（devenv.exe / SafeMode禁用包括ReSharper在内的扩展，不会增加加载时间）
这个问题早于我添加SendGrid依赖项，因此它与此无关。
我现在已更新到最新的工具（dotnet-win-x64.1.1.0.exe）

我还应该提一下，我已经完成了将其关闭并再次打开的最爱！

这是我的project.json文件的更新副本

{
  "devDependencies": {
    "gulp": "3.9.1"
  },

  "userSecretsId": "SP2017-5731e8a3-a3ec-4a25-bcb5-asdf2432hjk232",

  "dependencies": {
    "Microsoft.NETCore.App": "1.1.0",
    "Microsoft.AspNetCore.Razor.Tools": {
      "version": "1.0.0-preview2-final",
      "type": "build"
    },
    "Pomelo.EntityFrameworkCore.MySql": "1.1.0",
    "Microsoft.EntityFrameworkCore.Tools": {
      "version": "1.1.0-preview4-final",
      "type": "build"
    },
    "Microsoft.VisualStudio.Web.CodeGeneration.Tools": {
      "version": "1.0.0-preview2-final",
      "type": "build"
    },
    "Microsoft.VisualStudio.Web.CodeGenerators.Mvc": {
      "version": "1.0.0-preview2-final",
      "type": "build"
    },
    "SendGrid.Core": "1.0.0",
    "SendGrid.NetCore": "1.0.0-rtm-00002",
    "BundlerMinifier.Core": "2.2.306",
    "Microsoft.ApplicationInsights.AspNetCore": "1.0.2",
    "Microsoft.AspNetCore.Authentication.Cookies": "1.1.0",
    "Microsoft.AspNetCore.Diagnostics": "1.1.0",
    "Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore": "1.1.0",
    "Microsoft.AspNetCore.Identity.EntityFrameworkCore": "1.1.0",
    "Microsoft.AspNetCore.Mvc": "1.1.0",
    "Microsoft.AspNetCore.Routing": "1.1.0",
    "Microsoft.AspNetCore.Server.IISIntegration": "1.1.0",
    "Microsoft.AspNetCore.Server.Kestrel": "1.1.0",
    "Microsoft.AspNetCore.StaticFiles": "1.1.0",
    "Microsoft.EntityFrameworkCore.SqlServer": "1.1.0",
    "Microsoft.EntityFrameworkCore.SqlServer.Design": "1.1.0",
    "Microsoft.Extensions.Configuration.EnvironmentVariables": "1.1.0",
    "Microsoft.Extensions.Configuration.Json": "1.1.0",
    "Microsoft.Extensions.Configuration.UserSecrets": "1.1.0",
    "Microsoft.Extensions.Logging": "1.1.0",
    "Microsoft.Extensions.Logging.Console": "1.1.0",
    "Microsoft.Extensions.Logging.Debug": "1.1.0",
    "Microsoft.Extensions.Options.ConfigurationExtensions": "1.1.0",
    "Microsoft.VisualStudio.Web.BrowserLink.Loader": "14.1.0"
  },

  "tools": {
    "Microsoft.AspNetCore.Razor.Tools": "1.0.0-preview2-final",
    "Microsoft.AspNetCore.Server.IISIntegration.Tools": "1.0.0-preview2-final",
    "Microsoft.EntityFrameworkCore.Tools": "1.0.0-preview2-final",
    "Microsoft.Extensions.SecretManager.Tools": "1.0.0-preview2-final",
    "Microsoft.VisualStudio.Web.CodeGeneration.Tools": {
      "version": "1.0.0-preview2-final",
      "imports": [
        "portable-net45+win8"
      ]
    }
  },

  "frameworks": {
    "netcoreapp1.1": {
      "dependencies": {
        "Microsoft.NETCore.App": {
          "type": "platform",
          "version": "1.1.0"
        }
      },
      "imports": "dnxcore50"
    }
  },

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

  "runtimeOptions": {
    "configProperties": {
      "System.GC.Server": true
    }
  },
  "runtimes": {
    "win10-64": {} 
  },

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

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

我想我可能会找出原因，但不知道如何解决它。

我依稀记得在添加一些bower依赖项后得到问题，这可能是原因（我已经尝试删除所有的bower依赖项

我的bower.json文件目前看起来像

{
  "name": "asp.net",
  "private": true,
  "dependencies": {
    "bootstrap": "3.3.6",
    "jquery": "2.2.0",
    "jquery-validation": "1.14.0",
    "jquery-validation-unobtrusive": "3.2.6",
    "font-awesome": "4.6.1",
    "admin-lte": "*",
    "material-design-icons": "2.2.3",
    "startbootstrap-creative": "3.3.7"
  }
}

我刚刚将其添加到我的新模板化解决方案中，并且包恢复正在花费时间。所以我想知道Visual Studio是否将打开恢复功能称为打开解决方案的一部分？

Answer 1

这是一个可行的建议。

我建议将.netcore更新为1.1，因为1.0存在许多问题通过在nuget控制台Install-Package Microsoft.NETCore.App

中运行它

另一个问题可能是您正在加载失败或无法正常工作的依赖项。

例如，它可能正在加载您的发送网格，并且发送网格非常慢，这可能是原因。

尝试运行一个非常简单的应用程序，没有任何依赖关系，看看你是否得到相同的结果。

Answer 2

如果您有Resharper，请尝试从VS选项菜单中暂停它，看看会发生什么。我还在使用Resharper激活的asp.net核心项目加载时间更长。使用暂停的Resharper，解决方案加载速度足够快

Answer 3

如果这些不是最新的，请尝试这些更新

将您的visual studio更新为最新的Visual Studio Update 3
将您的Visual Studio 2015 Tools更新为最新的当前视觉效果 Studio 2015 Tools (Preview 2)
将您的.NET Core更新为最新的当前.NET Core 1.1 SDK

然后更新您的项目以使用最新的.Net Core SDK作为描述here 并且还会更新nuget中的所有包。

Answer 4

事实证明，罪魁祸首实际上是在凉亭依赖中并且是

"material-design-icons": "2.2.3"

从我的bower.json文件中删除它（并从相应的wwwroot / lib文件夹中删除）之后，我的解决方案现在大约在10-15秒内加载（比20分钟快得多）。

出于兴趣，我创建了一个新的（非VS / asp.net核心文件夹），运行 bower cache clear 然后 bower.init ，然后运行 bower install material-design-icons ，仅需10分钟即可安装此1个包/依赖

原来这个软件包是43.7MB（磁盘上81.5MB），这不是我的网速（16ms ping，104.5Mbps下载，6.3Mbps上传）

ASP.NET Core项目加载时间

4 个答案: