IConfiguration.GetSection with Where selector

Question

I'm using IConfiguration.GetSection to retrieve configuration information from a config file:

var loggingProviders = Config.GetSection( "Logging" ).Get<LoggingProviders>();

which works just fine, but I want to only retrieve entries that are enabled, so I want to do either of these:

var loggingProviders = Config.GetSection( "Logging" ).Get<LoggingProviders>().Where( x => x.Enabled == true );

var loggingProviders = Config.GetSection( "Logging" ).Where( x => x.Enabled == true ).Get<LoggingProviders>();

But I keep getting hitting a dead end, any advice would be appreciated!

Answer 1

If you want to use .Where,it needs to be a list,here is a demo:

public class LoggingProviders
    {
        public int Id { get; set; }
        public bool Enabled { get; set; }
    }

appsettings.json:

"Logging1": [
    {
      "Id": "1",
      "Enabled": "true"
    },
    {
      "Id": "2",
      "Enabled": "true"
    },
    {
      "Id": "3",
      "Enabled": "false"
    }
  ]

startup:

public IConfiguration Configuration { get; }
...
List<LoggingProviders> loggingProviders = Configuration.GetSection("Logging1").Get<List<LoggingProviders>>().Where(x => x.Enabled == true).ToList();

result:

If you don't get a list,and want to use .where,you can try to change it to list first.Here is a demo. appsettings.json:

"Logging1": 
    {
      "Id": "1",
      "Enabled": "true"
    },

startup:

public IConfiguration Configuration { get; }
    ...
List<LoggingProviders> l= new List<LoggingProviders>();
l.Add(Configuration.GetSection("Logging1").Get<LoggingProviders>());
List<LoggingProviders> loggingProviders = l.Where(x => x.Enabled == true).ToList();

result: