how to set date and time in c# YYYY-MM-dd: hh:mm:ss format code example

Example 1: c# datetime dd/mm/yyy hh:mm:ss

DateTime.Now.ToString("dd'/'MM'/'yyyy HH:mm:ss")
 //output: 13/06/2020 13:05:21

Example 2: c# date string format yyyy-mm-dd

public static string FORMAT_PDF = "dd/MM/yyyy";
public static string convertDateTimeFormatByStrDate(string strDate,string format)
{
	DateTime temp = Convert.ToDateTime(strDate);
	return temp.ToString(format);
}