由网友(走不进你的世界)分享简介：我按照步骤这里从ASP.NET 5 Beta 4的升级到Beta版5，但我打电话时， application.UseBrowserLink（）得到一个运行时错误; ：I have followed the steps here to upgrade from ASP.NET 5 Beta 4 to Beta 5 bu...

我按照步骤这里从ASP.NET 5 Beta 4的升级到Beta版5，但我打电话时， application.UseBrowserLink（）得到一个运行时错误; ：

I have followed the steps here to upgrade from ASP.NET 5 Beta 4 to Beta 5 but am getting an error at runtime when calling application.UseBrowserLink();:

类型'System.TypeLoadException'的异常发生   mscorlib.dll中，但没有在用户code处理

An exception of type 'System.TypeLoadException' occurred in mscorlib.dll but was not handled in user code

更多信息：未能加载类型   从程序集Microsoft.AspNet.Builder.IApplicationBuilder   Microsoft.AspNet.Http，版本= 1.0.0.0，文化=中立，   公钥=空'。

Additional information: Could not load type 'Microsoft.AspNet.Builder.IApplicationBuilder' from assembly 'Microsoft.AspNet.Http, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'.

这些是我遵循的步骤：

在已经安装了VS 2015年RC。 从PowerShell中运行：      $ ENV：DNX_FEED =htt​​ps://www.nuget.org/api/v2 从PowerShell中运行： dnvm升级

添加一个Global.json文件（我不已经有一个）。当我把它添加，它指的是测试版已经5： Had VS 2015 RC already installed. From PowerShell run: $env:DNX_FEED="https://www.nuget.org/api/v2" From PowerShell run: dnvm upgrade

Added a Global.json file (I did not already have one). When I added it, it referred to Beta 5 already:

{
    "projects": [ "Source", "Tests" ],
    "sdk": {
        "version": "1.0.0-beta5-12103"
    }
}

更​​新的包在project.json到Beta版5.你可以看到一个完整版我project.lock.json文件的这里。

{
  "dependencies": {
    "Boilerplate.Web.Mvc6": "1.0.2",
    "Microsoft.AspNet.Diagnostics": "1.0.0-beta5",
    "Microsoft.AspNet.Mvc": "6.0.0-beta5",
    "Microsoft.AspNet.Mvc.TagHelpers": "6.0.0-beta5",
    "Microsoft.AspNet.Mvc.Xml": "6.0.0-beta5",
    "Microsoft.AspNet.Server.IIS": "1.0.0-beta5",
    "Microsoft.AspNet.Server.WebListener": "1.0.0-beta5",
    "Microsoft.AspNet.StaticFiles": "1.0.0-beta5",
    "Microsoft.AspNet.Tooling.Razor": "1.0.0-beta5",
    "Microsoft.Framework.CodeGenerators.Mvc": "1.0.0-beta5",
    "Microsoft.Framework.Configuration.EnvironmentVariables": "1.0.0-beta5",
    "Microsoft.Framework.Configuration.Json": "1.0.0-beta5",
    "Microsoft.Framework.Configuration.UserSecrets": "1.0.0-beta5",
    "Microsoft.Framework.Logging": "1.0.0-beta5",
    "Microsoft.Framework.Logging.Console": "1.0.0-beta5",
    "Microsoft.VisualStudio.Web.BrowserLink.Loader": "14.0.0-beta5",
    "Newtonsoft.Json": "6.0.6",
    "System.Runtime": "4.0.20-beta-23019"
  }
  "frameworks": {
      "dnx451": {
        "frameworkAssemblies": {
          "System.Net.Http": "4.0.0.0",
          "System.ServiceModel": "4.0.0.0"
        }
      },
      "dnxcore50": {
        "dependencies": {
          "System.Net.Http": "4.0.0-beta-23019"
        }
      }
    }
}

的说明，然后继续说，你应该运行下面的命令，但我相信VS 2015 RC为您完成此 DNU恢复然后 DNU构建。

The instructions then go on to say you should run the following commands but I believe VS 2015 RC does this for you dnu restore then dnu build.

更新

有似乎与浏览器链路的问题，评论线路输出允许工作现场。它可能被打破？需要寻找周围的ASPNET GitHub的问题。

It seems to be a problem with browser link, commenting the line out allows the site to work. It may be broken? Need to hunt around the aspnet GitHub issues.

推荐答案

为了帮助您从BETA4迁移到beta5的，这些都是我花了下面的步骤，根据研究/调查结果。

In order to help you migrate from beta4 to beta5, these are the following steps it took me, based on the research/findings.

在PowerShell中运行： $ ENV：DNX_FEED =htt​​ps://www.nuget.org/api/v2 在PowerShell中运行： dnvm安装1.0.0-beta5的 在PowerShell中运行： dnvm使用1.0.0-beta5的-p （不知道，如果它需要的，但是我不得不的） PowerShell run: $env:DNX_FEED="https://www.nuget.org/api/v2" PowerShell run: dnvm install 1.0.0-beta5 PowerShell run: dnvm use 1.0.0-beta5 -p (not sure if its needed however i had to)

打开global.json和更新的SDK 1.0.0-beta5的应该是这样的：

Open global.json and update sdk to 1.0.0-beta5 should look like this:

{
    "projects": [ "src", "test" ],
    "sdk": {
        "version": "1.0.0-beta5"
    }
}

打开project.json：

Open project.json:

从BETA4更新依赖版本beta5的

修改配置依赖来自：

"Microsoft.Framework.ConfigurationModel.Json": "1.0.0-beta4"

到

"Microsoft.Framework.Configuration": "1.0.0-beta5",
"Microsoft.Framework.Configuration.Json": "1.0.0-beta5"

删除 Microsoft.VisualStudio.Web.BrowserLink.Loader 重命名 _GlobalImport.cshtml 到 _ViewImports.cshtml

Remove Microsoft.VisualStudio.Web.BrowserLink.Loader Rename _GlobalImport.cshtml to _ViewImports.cshtml

更​​改配置重大更改

Change Configuration breaking changes

更​​改从命名空间使用Microsoft.Framework.ConfigurationModel; 到使用Microsoft.Framework.Configuration;

修改 Configuration.GetSubKey 到 Configuration.GetConfigurationSection

更改CTOR为：

public Startup(IHostingEnvironment env, IApplicationEnvironment appEnv)
{           
    // Setup configuration sources.
    var configBuilder = new ConfigurationBuilder(appEnv.ApplicationBasePath)
    .AddJsonFile("config.json")
    .AddEnvironmentVariables();

    Configuration = configBuilder.Build();
}

删除 app.UseBrowserLink（）;

Remove app.UseBrowserLink();

在中打开PowerShell中的应用程序根目录 运行 DNU恢复 运行 DNU建 关闭并重新打开VS在这一点有时帮助。 Open PowerShell within app root Run dnu restore Run dnu build Closing and reopening VS at this point helps sometimes.

我自己觉得这是很困难的升级现有的项目，找不到所需的所有在一起的所有步骤。 希望它可以帮助！

Myself found it quite difficult to upgrade an existing project, couldn't find all steps required all together. Hope it helps!