[C#/COMMON] CultureInfo 클래스 : yyyy-MM-dd HH:mm:ss 포맷 문자열 전역 설정하기

using System;
using System.Globalization;
using System.Threading;

CultureInfo cultureInfo = CultureInfo.CurrentCulture.Clone() as CultureInfo;
 
cultureInfo.DateTimeFormat.LongDatePattern  = "yyyy-MM-dd";
cultureInfo.DateTimeFormat.LongTimePattern  = "HH:mm:ss";
cultureInfo.DateTimeFormat.ShortDatePattern = "yyyy-MM-dd";
cultureInfo.DateTimeFormat.ShortTimePattern = "HH:mm:ss";
 
Thread.CurrentThread.CurrentCulture   = cultureInfo;
Thread.CurrentThread.CurrentUICulture = cultureInfo;
 
Console.WriteLine(DateTime.Now.ToString());