Microsoft.Framework.ConfigurationModel assembly name changed to Microsoft.Framework.Configuration

[kirthik]

We changed the assembly name and namespace of Microsoft.Framework.ConfigurationModel to Microsoft.Framework.Configuration.

Configuration class name is changed to ConfigurationSection.

[developer1998]

@davidfowl Due to this change how can I rewrite

public IConfiguration Configuration { get; set; }

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

which you provided in #13

I tried

    public IConfiguration Configuration { get; set; }

    public Startup(IHostingEnvironment env, IApplicationEnvironment appEnv)
    {
        Configuration = new ConfigurationSection(appEnv.ApplicationBasePath).
            .AddJsonFile("config.json")
            .AddEnvironmentVariables();
    }

but it does not work

[kirthik]

    public IConfiguration Configuration { get; set; }

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

The idea is you add sources toConfigurationBuilder and then call Build on it which returns IConfiguration object

[developer1998]

Thank you. I've tried but it tells me that there is no definition for AddJsonFile. Is this method maybe not implemented yet, since I've seen AddIniFile?

[developer1998]

nvm, I've included "Microsoft.Framework.Configuration.Json": "1.0.0-*" dependency in project.json and it works now, thank you very much.

[nrkarthick]

Yesterday I have migrated from beta4 to beta6, I used the above change but I could not get the values(key) in controller

 var Configuration = new ConfigurationBuilder().AddJsonFile("myconfig.json");
 var jsonNodes = Configuration.Get("SomeJsonNode");

It throws exception in Configuration.Get as 'Iconfigurationbuilder does not contain a definition for Get.

[kirthik]

You have to call Build() on ConfigurationBuilder to build the Configuration now. Here is what you need to do

         var configurationBuilder = new ConfigurationBuilder().AddJsonFile("myconfig.json");
         var configuration = configurationBuilder.Build();

[nrkarthick]

@kirthik , thank u. but it throws error
Unable to resolve path 'myconfig.json'; construct this IConfigurationBuilder with a non-null BasePath.

in my startup class I already defined the path
public Startup(IHostingEnvironment env, IApplicationEnvironment appEnv)
{
// Setup configuration sources.
var configurationBuilder = new ConfigurationBuilder(appEnv.ApplicationBasePath)
.AddJsonFile("config.json")
.AddJsonFile($"config.{env.EnvironmentName}.json", optional: true);
}

I could not get the value of connection string from the config.json

[kirthik]

Sorry should have been more explicit in my earlier comment. You should either provide full path of file to AddJsonFile or add a base path to ConfigurationBuilder. Pasting sample from my earlier comment

public IConfiguration Configuration { get; set; }

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

[nrkarthick]

thank u.. I have already using this in my startup class, please see my comment... I just want to get the connection string value in my Controller. I also included the IApplicationEnvironment appEnv in the below code without success. please help

 private string returnConnectionString()
          {
              IApplicationEnvironment appEnv;

            var configurationBuilder = new ConfigurationBuilder(appEnv.ApplicationBasePath).AddJsonFile("config.json");
            var configuration = configurationBuilder.Build();

            var Conn = configuration.Get("Data:ConnectionString");
            return Conn;
 }

But in beta4, I can easily grab the values stored in config.json using the following code:

 var configuration = new Configuration().AddJsonFile("config.json");
 var Conn = configuration.Get("Data:ConnectionString");
 return Conn;

[kirthik]

Where are you instantiating appEnv?

[nrkarthick]

I am instantiating appEnv in my Startup Class... as follows :

 public IConfiguration Configuration { get; set; }
public Startup(IHostingEnvironment env, IApplicationEnvironment appEnv)
{
     var configurationBuilder = new ConfigurationBuilder(appEnv.ApplicationBasePath).
        .AddJsonFile("config.json")
        .AddEnvironmentVariables();
     Configuration = configurationBuilder.Build();
}

I think the problem is with appEnv.. and still getting the same error

 Unable to resolve path 'myconfig.json'; construct this IConfigurationBuilder with a non-null BasePath.

[ngonzalezromero]

Try this

var path = app.ApplicationBasePath;
            Configuration = new ConfigurationBuilder()
            .AddJsonFile($"{path}/config.json")
            .AddEnvironmentVariables()
            .Build();

[nrkarthick]

This is ok in startup class(with path).. But how to get the connection string value/key which is defined in config.json in the controller. The following method returns error unable to resolve path.

 private string returnConnectionString()
      {
        var configurationBuilder = new ConfigurationBuilder().AddJsonFile("config.json");
        var configuration = configurationBuilder.Build();

        var Conn = configuration.Get("Data:ConnectionString");
        return Conn;
  }

[ngonzalezromero]

you can't create a ConfigurationBuilder each time the you need the connection string.
This is the way.

   public IConfiguration Configuration { get; set; }

    public Startup(IHostingEnvironment env, IApplicationEnvironment app)
    {
        var path = app.ApplicationBasePath;
        Configuration = new ConfigurationBuilder()
        .AddJsonFile($"{path}/config.json")
        .AddEnvironmentVariables()
        .Build();
    }

    public void ConfigureServices(IServiceCollection services)
    {
             var Conn = configuration.Get("Data:ConnectionString");
    }

[nrkarthick]

@ngonzalezromero u r right... I am getting the connection string in the ConfigureServices as per ur comment... Could u guide me how to get the same in my controller/class ...?..

[MichaCo]

Usually you want to use DI to inject whatever you need to your controller's ctor.
You could use the Microsoft.Framework.OptionsModel to configure a strongly typed settings class from the IConfiguration object and let it bind the data for you automagically.

services.Configure<AppSettings>(Configuration.GetConfigurationSection("Data"));

and then inject it

public HomeController(IOptions<AppSettings> settings)
{
    var connectionString = settings.Options.ConnectionString;
}

How you structure your configuration data or settings object is totally up to you.

[nrkarthick]

Thank u Michaco, but when using this i am getting error:

 Cannot create an instance of an interface. 

I will try to Add IOptions Settings to the constructor of my MVC controller and let u know

[Eilon]

@nrkarthick for general discussions and issues please log an item in https://github.com/aspnet/Home/issues. Please create a GitHub repo with a simplified app that demonstrates the issue.

[dnxit]

what if I need var serviceUrl = settings.Options.ServiceUrl; in a utility class instead of Controller how to get IOptions settings in the ctor ??????

public HomeController(IOptions settings)
{
var serviceUrl = settings.Options.ServiceUrl;
}