Gerenciador de configurações utilizando Sharp-Config 1.0.0

ConfigManager.cs

using SharpConfig;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace FolderScannerClassLibrary
{
    public class ConfigManager
    {
        private const string CONFIG_NAMESPACE = "UncaFlowLibConfig";
        
        private static ConfigManager _instance = null;
        private Config _cfg;

        private ConfigManager()
        {
            _cfg = new Config(CONFIG_NAMESPACE, false, true);
        }

        public static ConfigManager GetInstance()
        {
            if (_instance == null)
                _instance = new ConfigManager();

            return _instance;
        }

        public string DbConnectionString
        {
            get
            {
                string value = Convert.ToString(_getItem("DbConnectionString"));

                if (String.IsNullOrEmpty(value))
                    value = "Data Source=uncaflow.db";

                return value;
            }
            set
            {
                _cfg["DbConnectionString"] = value;
            }
        }

        private object _getItem(string key)
        {
            object value = null;

            try
            {
                value = _cfg[key];
            }
            catch { }

            return value;
        }
    }
}