ASP.NET vNext has a new configuration system.

With the new version of ASP.NET more than one file type is supported.

Currently, there are 3 different file types that are supported: Json, Xml and Ini.

For example, we can define connection string in config.json file:

{
    "Data": {
        "DefaultConnection": { 
            "ConnectionString": "Server=(localdb)\\mssqllocaldb;Database=DbName;Trusted_Connection=True;MultipleActiveResultSets=true"
        }
    }
}

You can also get  settings from Environment Variables.

To read connection string from config.json from any location in your app you need to add a reference to Microsoft.Framework.ConfigurationModel.Json.

Now simple import namespace and use code below to read connection string from config.json:

using Microsoft.Framework.ConfigurationModel.Json;

var configuration = new Configuration()
                .AddJsonFile("config.json")
                .AddEnvironmentVariables();

var connectionString = configuration.Get("Data:DefaultConnection:ConnectionString");

You can also load configuration from multiple different config files:

  var configuration = new Configuration()
                              .AddJsonFile("config.json")
                              .AddIniFile("config.ini")
                              .AddXmlFile("config.xml")
                              .AddEnvironmentVariables();

To use xml files you need to reference Microsoft.Framework.ConfigurationModel.Xml and for Ini Microsoft.Framework.ConfigurationModel.

Supporting multiple config files and reading values from config files has never been easier.

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