secure-core/SecureCore/AppSettingsManager.cs

using System.IO;
using Microsoft.Extensions.Configuration;

namespace SecureCore
{
    public static class AppSettingsManager
    {
        public static bool TryGetConnectionString(string connectionStringName, out string connectionString)
        {
            connectionString = string.Empty;

            try
            {
                connectionString = GetConfiguration().GetConnectionString(connectionStringName);

                if (!string.IsNullOrEmpty(connectionString)) return true;
                else return false;
            }
            catch { return false; }
        }

        public static bool TryGetSettingString(string sectionName, string key, out string setting)
        {
            setting = string.Empty;

            try
            {
                setting = GetConfiguration().GetSection(sectionName)[key];

                if(!string.IsNullOrEmpty(setting)) return true;
                else return false;
            }
            catch { return false; }
        }

        public static bool TryGetSettingInt(string sectionName, string key, out int setting)
        {
            setting = 0;

            try
            {
                var settingString = GetConfiguration().GetSection(sectionName)[key];

                if (int.TryParse(settingString, out setting)) return true;
                else return false;
            }
            catch { return false; }
        }

        private static IConfigurationRoot GetConfiguration()
        {
            return new ConfigurationBuilder()
                    .SetBasePath(Directory.GetCurrentDirectory())
                    .AddJsonFile("appsettings.json")
                    .Build();
        }
    }
}