gistfile1.txt

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;
using System.Reflection;
using System.Runtime.InteropServices;

namespace cli_20150929
{
    class INI  
    {
        string filePath;
        string EXE = Assembly.GetExecutingAssembly().GetName().Name;

        [DllImport("kernel32")]
        static extern long WritePrivateProfileString(string Section, string Key, string Value, string FilePath);

        [DllImport("kernel32")]
        static extern int GetPrivateProfileString(string Section, string Key, string Default, StringBuilder RetVal, int Size, string FilePath);

        public INI(string IniPath = null)
        {
            filePath = new FileInfo(IniPath ?? EXE + ".ini").FullName.ToString();
        }

        public string Read(string Key, string Section = null)
        {
            if (KeyExists(Key, Section)) 
            {
                var RetVal = new StringBuilder(255);
                GetPrivateProfileString(Section ?? EXE, Key, "", RetVal, 255, filePath);
                return RetVal.ToString();
            } else {
                Console.WriteLine("[{0}][{1}] is not configured in your settings.ini", Key, Section);
                Console.ReadLine();
                System.Environment.Exit(1);
                return null;
            }
        }

        public void Write(string Key, string Value, string Section = null)
        {
            WritePrivateProfileString(Section ?? EXE, Key, Value, filePath);
        }

        public void DeleteKey(string Key, string Section = null)
        {
            Write(Key, null, Section ?? EXE);
        }

        public void DeleteSection(string Section = null)
        {
            Write(null, null, Section ?? EXE);
        }

        public bool KeyExists(string Key, string Section = null)
        {
            return Read(Key, Section).Length > 0;
        }
    }
}