On an .NET Core Console app, I'm trying to map settings from a custom appsettings.json file into a custom configuration class.
I've looked at several resources online but was not able to get the .Bind extension method work (i think it works on asp.net apps or previous version of .Net Core as most of the examples show that).
Here is the code:
static void Main(string[] args)
{
var builder = new ConfigurationBuilder()
.SetBasePath(Directory.GetCurrentDirectory())
.AddJsonFile("appsettings.json", optional: false, reloadOnChange: true);
IConfigurationRoot configuration = builder.Build();
//this is a custom configuration object
Configuration settings = new Configuration();
//Bind the result of GetSection to the Configuration object
//unable to use .Bind extension
configuration.GetSection("MySection");//.Bind(settings);
//I can map each item from MySection manually like this
settings.APIBaseUrl = configuration.GetSection("MySection")["APIBaseUrl"];
//what I wish to accomplish is to map the section to my Configuration object
//But this gives me the error:
//IConfigurationSection does not contain the definition for Bind
//is there any work around for this for Console apps
//or do i have to map each item manually?
settings = configuration.GetSection("MySection").Bind(settings);
//I'm able to get the result when calling individual keys
Console.WriteLine($"Key1 = {configuration["MySection:Key1"]}");
Console.WriteLine("Hello World!");
}
Is there any approach to auto map the results from GetSection("MySection") to a custom object? This is for Console Application running on .NET Core 1.1
Thanks!
Application configuration in ASP.NET Core is performed using one or more configuration providers. Configuration providers read configuration data from key-value pairs using a variety of configuration sources: Settings files, such as appsettings. json.
Used to build key/value-based configuration settings for use in an application.
You need to add the NuGet package Microsoft.Extensions.Configuration.Binder
to get it to work in a console application.
I had to implement this recently so thought I'd add a whole working solution:
Ensure the following Nuget packages are installed:
Add a json file and define some settings:
AppSettings.json
{
"Settings": {
"ExampleString": "StringSetting",
"Number" : 1
}
}
Bind this configuration to an object within a console app
public class Program
{
static void Main(string[] args)
{
var builder = new ConfigurationBuilder()
.SetBasePath(Directory.GetCurrentDirectory())
.AddJsonFile("AppSettings.json");
var config = builder.Build();
var appConfig = config.GetSection("Settings").Get<AppSettings>();
Console.WriteLine(appConfig.ExampleString);
Console.WriteLine(appConfig.Number);
}
}
public class AppSettings
{
public string ExampleString { get; set; }
public int Number { get; set; }
}
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