0
votes

I'm trying to bind appsettings file into a generic class, but currently I can't map List<object> values.

I have an appsettings.Development.json hierarchy like this:

{
    "AppSettings":{
        "ApplicationName":"FOO"
        "MyValues":[
            {
                "Name":"Tryout1",
                "QuestionCount": 7
            },
            {
                "Name":"Tryout2"
                "SettingName":"ABCDEFG"
            }
        ]
    }
}

And my generic class is like this:

public class AppSettings
{
    public string ApplicationName {get;set;}
    public List<object> MyValues {get;set;}
}

When I use below code to bind this appsettings.Development.json into the generic class like this:

static ConfigurationHelper()
{
    var environmentName = Environment.GetEnvironmentVariable("ASPNETCORE_ENVIRONMENT");
    
    var config = new ConfigurationBuilder()
        .SetBasePath(Directory.GetCurrentDirectory())
        .AddJsonFile($"appsettings.{environmentName}.json")
        .Build();

    try
    {
        var tryout = config.Get(typeof(AppSettings));
    }
    catch (Exception ex)
    {

        throw ex;
    }
}

tryout variable has the ApplicationName filled with value foo but the MyValues is just an empty array.

I also tried using object[] instead of List<object> and at that point it recognizes the amount of objects but all of the elements have the value null.

I don't want the MyValues array to be pre-defined because every element can and will have different fields and I want to make this process as generic as possible. How can I achieve this?

i'm 99% sure this is not possible - they need to be strongly typed. You could use interfaces if they share some common properties perhapsJazb