I have below coded a class that loads information from a file that I select. The file then loads the content of that file in the INI format. The INI format usually works when each line contains key=value and then each line is split by the  = character in the code. It also contains a method for getting the item by key from the dictionary of stored items previously loaded from the file. I wondered if anyone could help me out in finding any way to improve this? I think its pretty well coded in my eyes, but of course there is always room for improvement.namespace Hariak_Emulator.Emulator.Core.Config{    using System;    using System.Collections.Generic;    using System.IO;    using System.Linq;    using NLog;    using Utilities;    internal sealed class ConfigManager : IDisposable    {        private static readonly ILogger Logger = LogManager.GetCurrentClassLogger();        private Dictionary<string, string> _configItems;        private string _configFile;        public ConfigManager()        {            _configItems = new Dictionary<string, string>();            _configFile = assets/config/hariak_config.ini;            LoadConfig();        }        private void LoadConfig()        {            try            {                if (!File.Exists(_configFile) || Utilities.IsFileLocked(new FileInfo(_configFile)))                {                    Logger.Error(Either your config file couldn't be found, or its open somewhere else.);                    Console.ReadKey(true);                    Environment.Exit(0);                }                _configItems = File.ReadLines(_configFile).Where(IsConfigurationLine).Select(line => line.Split('=')).ToDictionary(line => line[0], line => line[1]);            }            catch (Exception exception)            {                Logger.Fatal(Error while loading config:  + exception.Message);                Logger.Fatal(exception.StackTrace);                Console.ReadKey(true);                Environment.Exit(0);            }        }        private static bool IsConfigurationLine(string line)        {            return !line.StartsWith(#) && line.Contains(=);        }        internal string GetConfigValueByKey(string key)        {            string value;            if (!_configItems.TryGetValue(key, out value))            {                Logger.Warn(Missing configuration key ` + key + `);            }            return value;        }        public void Dispose()        {            if (!disposing)            {                return;            }            _configItems.Clear();            _configItems = null;            _configFile = ;        }    }}
Configuration Handler
c#