C # DateTime various conventional operations

We developed the conversion time is commonly used, for example: obtaining the current system time, obtaining UTC time, date and time format, converted into a time zone 0, the current system zone, time of operation, take a single date and time;

First, access date and time

//获取当前系统时间
var currentTime = DateTime.Now;
//获取UTC时间
var utc = DateTime.UtcNow;

Second, the date and time format

//获取当前系统时间
var currentTime = DateTime.Now;
Console.WriteLine(currentTime.ToString("yyyy/MM/dd HH:mm:ss"));
Console.WriteLine(currentTime.ToString("yyyy/MM/dd"));
Console.WriteLine(currentTime.ToString("HH:mm:ss"));

Third, the time zone conversion date

//获取UTC时间
var utc1 = DateTime.UtcNow;
//将UTC时间转换成当前系统时区
var currentDateTime = timeZone.ToLocalTime(utc1);
//将当前系统时间转换成UTC时间
var utc2 = timeZone.ToUniversalTime(currentDateTime);
Console.WriteLine("UTC日期时间：{0}",utc1);
Console.WriteLine("将UTC时间转换成当前系统时区的日期时间：{0}",currentDateTime);
Console.WriteLine("将当前系统时间转换成UTC时间的日期时间：{0}", utc2);

Fourth, the date and time to take a single

//获取当前系统时间
var currentDateTime = DateTime.Now;
//年
Console.WriteLine("年：" + currentDateTime.Year);
//月
Console.WriteLine("月：" + currentDateTime.Month);
//日
Console.WriteLine("日：" + currentDateTime.Day);
//小时
Console.WriteLine("小时：" + currentDateTime.Hour);
//分钟
Console.WriteLine("分钟：" + currentDateTime.Minute);
//秒
Console.WriteLine("秒：" + currentDateTime.Second);
//毫秒
Console.WriteLine("毫秒：" + currentDateTime.Millisecond);

Fifth, the date and time of operation

//获取当前系统时间
var currentDateTime = DateTime.Now;
//加年
Console.WriteLine("加年：" + currentDateTime.AddYears(1));
//加月
Console.WriteLine("加月：" + currentDateTime.AddMonths(1));
//加日
Console.WriteLine("加日：" + currentDateTime.AddDays(1));
//加小时
Console.WriteLine("加小时：" + currentDateTime.AddHours(1));
//加分钟
Console.WriteLine("加分钟：" + currentDateTime.AddMinutes(1));
//加秒
Console.WriteLine("加秒：" + currentDateTime.AddSeconds(1));
//加毫秒
Console.WriteLine("加毫秒：" + currentDateTime.AddMilliseconds(1));