Error Upgrading from ASP.NET 5 Beta 4 to Beta 5

Question

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();:

Answer 1

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

Environment

• 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)

Project

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

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

• Open project.json:

  • Updated dependencies versions from beta4 to beta5

  • Change Configuration dependency from:

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

    to

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

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

Startup.cs changes

• Change Configuration breaking changes

  • Change namespace from using Microsoft.Framework.ConfigurationModel; to using Microsoft.Framework.Configuration;

  • Change Configuration.GetSubKey to Configuration.GetConfigurationSection

  • Change CTOR to:

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

  • Remove app.UseBrowserLink();

Project DNU CMDs

• Open PowerShell within app root
• Run dnu restore
• Run dnu build
• Closing and reopening VS at this point helps sometimes.

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