C#•4y ago

How to get appsettings config data in program ?

Hi i need to register an object in ServiceCollection that require information from the AzureStorageConfig

Yawnder•8/19/22, 3:07 PM

Then bind the configuration to your class.

Yawnder•8/19/22, 3:08 PM

You need another nuget for that iirc,

Microsoft.Extensions.Configuration.Binder

Microsoft.Extensions.Configuration.Binder

Yawnder•8/19/22, 3:08 PM

You would do something like

var myConfiguration = configuration.Get<MyClass>("MySection")

var myConfiguration = configuration.Get<MyClass>("MySection")

YYawnder You would do something like `var myConfiguration = configuration.Get<MyClass>("M...

TotechsStrypperOP•8/19/22, 4:29 PM

I tried it but when request the BlobContainer these 2 null

YYawnder Then bind the configuration to your class.

TotechsStrypperOP•8/19/22, 4:43 PM

I dont know how to use the binding

Yawnder•8/19/22, 5:06 PM

@TotechsStrypper

var settings = configuration.GetSection("MyConfigurationNode").Get<MySettingsClass>();

var settings = configuration.GetSection("MyConfigurationNode").Get<MySettingsClass>();

Yawnder•8/19/22, 5:07 PM

So in your case, just

builder.Configuration

builder.Configuration

rather than

configuration

configuration

Mayor McCheese•8/19/22, 7:04 PM

services.AddSingleton(provider => {
var options = provider.GetRequiredService<IOptions<MyClass>>();
return new BlobContainerClient(blahblahblah);
});

I personally wouldn't read directly from configuration in a non configuration map class unless there was no other option.

jcotton42•8/19/22, 7:20 PM

@TotechsStrypper $options

MODiX•8/19/22, 7:20 PM

{
  "My": {
    "Foo": {
      "Kix": 5
    }
  }
}

{
  "My": {
    "Foo": {
      "Kix": 5
    }
  }
}

public class FooOptions
{
  public const string SectionName = "My:Foo";

  public string Bar {get;set;} = "default value for bar";
  public int Kix {get;set;} = -1;
  public DateTime? Pouet {get;set;} = default;
}

public static IServiceCollection AddFoo(this IServiceCollection services) =>
  services
    .AddOptions<FooOptions>()
    .Configure<IConfiguration>((options, configuration) => configuration.Bind(FooOptions.SectionName, options))
    .Validate(options => options.Kix >= 0, $"The configuration key '{FooOptions.SectionName}:{nameof(Kix)}' cannot be negative")
    ;

public static IServiceCollection AddFoo(this IServiceCollection services, Action<FooOptions> configure) =>
  services
    .AddFoo()
    .Configure(configure);

//Startup:
services.AddFoo();
// or
services.AddFoo(fooOptions => fooOptions.Kix = 12);

public class FooOptions
{
  public const string SectionName = "My:Foo";

  public string Bar {get;set;} = "default value for bar";
  public int Kix {get;set;} = -1;
  public DateTime? Pouet {get;set;} = default;
}

public static IServiceCollection AddFoo(this IServiceCollection services) =>
  services
    .AddOptions<FooOptions>()
    .Configure<IConfiguration>((options, configuration) => configuration.Bind(FooOptions.SectionName, options))
    .Validate(options => options.Kix >= 0, $"The configuration key '{FooOptions.SectionName}:{nameof(Kix)}' cannot be negative")
    ;

public static IServiceCollection AddFoo(this IServiceCollection services, Action<FooOptions> configure) =>
  services
    .AddFoo()
    .Configure(configure);

//Startup:
services.AddFoo();
// or
services.AddFoo(fooOptions => fooOptions.Kix = 12);

MMayor McCheese services.AddSingleton(provider => { var options = provider.GetRequiredService...

TotechsStrypperOP•8/19/22, 7:27 PM

I use the service provider to get the job done

public class FooOptions { public const string SectionName = "My:Foo"; public string Bar {get;set;} = "default value for bar"; public int Kix {get;set;} = -1; public DateTime? Pouet {get;set;} = default; } public static IServiceCollection AddFoo(this IServiceCollection services) => services .AddOptions<FooOptions>() .Configure<IConfiguration>((options, configuration) => configuration.Bind(FooOptions.SectionName, options)) .Validate(options => options.Kix >= 0, $"The configuration key '{FooOptions.SectionName}:{nameof(Kix)}' cannot be negative") ; public static IServiceCollection AddFoo(this IServiceCollection services, Action<FooOptions> configure) => services .AddFoo() .Configure(configure); //Startup: services.AddFoo(); // or services.AddFoo(fooOptions => fooOptions.Kix = 12);