Error CS1503 - Cannot convert from Microsoft.Extensions.Configuration.IConfigurationSection to System.Action<>

Question

I am getting an error:

Error CS1503 Argument 2: cannot convert from 'Microsoft.Extensions.Configuration.IConfigurationSection' to 'System.Action<>

When I am using Configure with Bind(), it is working.

var bandConfig = new BandSettings();
Configuration.GetSection("BandSettings").Bind(bandConfig );

But with the below code, I am getting the above error.

I tried many solutions suggested in blogs and other forums, For example - Getting value from appsettings.json in .net core

but still the same error. Am I missing anything??

I have below things in place: appsettings.json

"BandSettings":{ 
"UserID": "aTestUserID", 
"Password" : "aTestPassword" 
}

BandSettings.cs

public class BandWidthSettings
{
    public string UserID { get; set; }
    public string ApiToken { get; set; }
}

TestHelper.cs

using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;

public static IConfiguration GetTestConfiguration()
         => new ConfigurationBuilder()
                       .AddJsonFile("appsettings.json")
                       .Build();

public IConfiguration Configuration { get; }

public TestHelper(IConfiguration configuration)
{
    Configuration = configuration;
}
public void ConfigureServices(IServiceCollection services)
{

    var config = new BandSettings();
    var bandSettingsSection = Configuration.GetSection("BandSettings");
    services.Configure<BandSettings>(bandSettingsSection);  //Error is getting on this line - bandSettingsSection
}

Isn't it: `services.Configure(o => bandSettingsSection.Bind(o));` — ChiefTwoPencils, Apr 21 '20 at 20:54
@ChiefTwoPencils Thank you for your comment. It works with Bind(). But I don't want to use Bind() with it. — born2Learn, Apr 21 '20 at 20:56
OK, but you still have to deal with `Configure` looking for an action (`o => SomeVoidMethod()`) and not a configuration section. — ChiefTwoPencils, Apr 21 '20 at 20:58

Benrobot · Answer 1 · 2021-11-10T01:46:24.313

159

Add NuGet package Microsoft.Extensions.Options.ConfigurationExtensions to get the extension method where

services.Configure<BandSettings>(Configuration.GetSection("BandSettings"));

will work.

Reference: https://github.com/dotnet/AspNetCore.Docs/issues/18833

edited Nov 10 '21 at 01:46

answered Dec 15 '20 at 02:09

Benrobot

2,630
1
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5

`Microsoft.Extensions.Options.ConfigurationExtensions` nuget package matters!! – fingers10 Sep 14 '21 at 09:56
4

Extension methods are the crappiest idea, when there is no way to tell where a method is provided. The documentation hardly ever helps. – Chris Peacock Jan 12 '22 at 18:30
How-to use it in MSTest project? – Kiquenet Jul 06 '22 at 09:51

score 5 · Answer 2 · answered Jun 15 '20 at 22:18

Create a POCO for the setting

public class MySetting
{
  public string Setting{ get; set; }
}

On Startup it works perfectly as it should be:

services.Configure<MySetting>(Configuration.GetSection("MySetting"));

However on my the dependecy injection add the bind as mentioned in the question comments.

private static void ConfigureServices(IServiceCollection services)
{
  var mySection = configuration.GetSection("MySetting");
  services.Configure<MySetting>(c => mySection .Bind(c));
}

`c => mySection .Bind(c)` was the missing part for me. Thank you. — James Gould, Nov 25 '20 at 17:06

score 0 · Accepted Answer · answered Apr 23 '20 at 01:52

0

 public IConfiguration Configuration { get; }
        public TestHelper(IConfiguration configuration)
        {
            Configuration = configuration;
        }

        public void ConfigureServices(IServiceCollection services)
        {
            //Configure section binding  
            services.Configure<BandSettings>(Configuration.GetSection(BandSettings.SECTION));
        }

answered Apr 23 '20 at 01:52

born2Learn

1,253
5
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1

It's needed add Microsoft.Extensions.Options.ConfigurationExtensions from NuGet. You can make it easier writing down OptionsConfigurationServiceCollectionExtensions in your code and wait for VS suggest you. – Jener Garcia Menezes Aug 25 '23 at 15:45

Error CS1503 - Cannot convert from Microsoft.Extensions.Configuration.IConfigurationSection to System.Action<>

3 Answers3