abp/modules/setting-management/src/Volo.Abp.SettingManagement.Domain/Volo/Abp/SettingManagement/ConfigurationSettingManagementProvider.cs

using System.Threading.Tasks;
using Microsoft.Extensions.Configuration;
using Volo.Abp.DependencyInjection;
using Volo.Abp.Settings;

namespace Volo.Abp.SettingManagement
{
    public class ConfigurationSettingManagementProvider : ISettingManagementProvider, ITransientDependency
    {
        public string Name => ConfigurationSettingValueProvider.ProviderName;

        protected IConfiguration Configuration { get; }

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

        public virtual Task<string> GetOrNullAsync(SettingDefinition setting, string providerKey)
        {
            return Task.FromResult(Configuration[ConfigurationSettingValueProvider.ConfigurationNamePrefix + setting.Name]);
        }

        public virtual Task SetAsync(SettingDefinition setting, string value, string providerKey)
        {
            throw new AbpException($"Can not set a setting value to the application configuration.");
        }

        public virtual Task ClearAsync(SettingDefinition setting, string providerKey)
        {
            throw new AbpException($"Can not set a setting value to the application configuration.");
        }
    }
}