Asp.Net VNext App Settings on Azure

Question

I really enjoyed the new Configuration feature of Asp.Net vNext using de default appsettings.json

But I would like to change the values of that file when I publish t

Answer 1

It worked very well David! Thank you!

Here a sample to help our friends with the same question:

startup.cs

public Startup(IHostingEnvironment env)
    {
        // Set up configuration sources.
        var builder = new ConfigurationBuilder()
            .AddJsonFile("appsettings.json")
            .AddJsonFile($"appsettings.{env.EnvironmentName}.json", optional: true);

        if (env.IsDevelopment())
        {
            // For more details on using the user secret store see http://go.microsoft.com/fwlink/?LinkID=532709
            builder.AddUserSecrets();
        }

        **builder.AddEnvironmentVariables();**
        Configuration = builder.Build();
    }

public void ConfigureServices(IServiceCollection services)
    {
        // Add framework services.
        services.AddEntityFramework()
            .AddSqlServer()
            .AddDbContext(options =>
                options.UseSqlServer(Configuration["Data:DefaultConnection:ConnectionString"]));

        services.AddIdentity()
            .AddEntityFrameworkStores()
            .AddDefaultTokenProviders();

        services.AddMvc();

        // Add application services.
        services.AddTransient();
        services.AddTransient();

        **services.AddInstance(Configuration);**
    }

HomeController.cs

IConfiguration _configuration;

    public HomeController(IConfiguration configuration)
    {
        this._configuration = configuration;

    }
    public IActionResult Index()
    {

        ViewBag.key = _configuration["Data:DefaultConnection:ConnectionString"];
        return View();
    }

Index.cshtml

@{
ViewData["Title"] = "Home Page";

} @ViewBag.key

To see the difference, run the web app on localhost and on an azure web app changing the appsetting Data:DefaultConnection:ConnectionString

Best,