.net core not able to read object out of appsettings.json-CodePudding

My dotnetcore application has a problem reading this object out of the appsettings.json:

  "image": {
    "ImagePresets": {
      "SearchListing"    : {"Width": 415, "Height": 220, "Fit": true},
      "PropertyPage"     : {"Width": 650, "Height": 350, "Fit": true},
      "Large"            : {"Width": 910, "Height": 650, "Fit": true},
      "FeaturedLocation" : {"Width": 272, "Height": 296, "Fit": true}
    }
  },

here is the object I'm trying to deserialize it to:

public class ImagePresets
{
    public Preset SearchListing { get; set; }
    public Preset PropertyPage { get; set; }
    public Preset Large { get; set; }
    public Preset FeaturedLocation { get; set; }

    public ImagePresets()
    {
        FeaturedLocation = SearchListing = Large = PropertyPage = new Preset();
    }

}
    public class Preset
{
    int Width { get; set; }
    int Height { get; set; }
    bool Fit { get; set; }
}

and this is how I am trying to read it:

ImagePresets _presets = _config.GetSection("image:ImagePresets").Get<ImagePresets>();

When I try executing _config.GetSection("image:ImagePresets").GetChildren() I do get the KeyValuePairs, but deserializing always returns empty values like:

Fit [bool]:
false
Height [int]:
0
Width [int]:
0

What am I doing wrong? Any help would be appreciated.

CodePudding user response：

It is simply because the properties of Preset is not public. This works

public class Preset
{
    public int Width { get; set; }
    public int Height { get; set; }
    public bool Fit { get; set; }
}

According to the documentation:

An options class:

Must be non-abstract with a public parameterless constructor.

All public read-write properties of the type are bound.

CodePudding user response：

El problema es que las propiedades de la clase Presset con privadas, deberían ser publicas para que puedan ser accesibles.

    public class Preset
{
    public int Width { get; set; }
    public int Height { get; set; }
    public bool Fit { get; set; }
}

Resultado con propiedades publicas

CodePudding user response：

If I am not wrong, You get get values like following code:

public class ClassName{

    public ClassName(IConfiguration configuration)
    {
        Configuration = configuration;
    }

    public IConfiguration Configuration { get; }

    YourClass YourMethod() {
        return Configuration["image:ImagePresets:SearchListing"];
    }
}