C# 之 DataTime常用方法

C# DataTime

参数format格式详细用法：

当前时间个获取：

namespace DataTimeTest
{ class Program { static void Main(string[] args) { //HH：24小时 hh:12小时 Console.WriteLine("yyyy-MM-dd HH:mm:ss:fff " + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss:fff")); Console.WriteLine("yyyy-MM-dd HH:mm:ss:ms " + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss:ms")); Console.WriteLine("y " + DateTime.Now.ToString("y")); Console.WriteLine("dddd "+DateTime.Now.ToString("dddd")); Console.WriteLine("dddd, MMMM dd yyyy " + DateTime.Now.ToString("dddd, MMMM dd yyyy")); Console.WriteLine("ddd, MMM d yy " + DateTime.Now.ToString("ddd, MMM d yy")); Console.WriteLine("dddd, MMMM dd " + DateTime.Now.ToString("dddd, MMMM dd")); Console.WriteLine("M/yy " + DateTime.Now.ToString("M/yy")); Console.WriteLine("dd-MM-yy " + DateTime.Now.ToString("dd-MM-yy")); Console.WriteLine(); Console.WriteLine("ToString('t'): "+DateTime.Now.ToString("t")); Console.WriteLine("ToString('d'): "+DateTime.Now.ToString("d")); Console.WriteLine("ToString('D'): "+DateTime.Now.ToString("D")); Console.WriteLine("ToString('f'): "+DateTime.Now.ToString("f")); Console.WriteLine("ToString('F'): "+DateTime.Now.ToString("F")); Console.WriteLine("ToString('G'): "+DateTime.Now.ToString("G")); Console.WriteLine("ToString('t'): "+DateTime.Now.ToString("t")); Console.WriteLine("ToString('T'): "+DateTime.Now.ToString("T")); Console.WriteLine("ToString('U'): "+DateTime.Now.ToString("U")); Console.WriteLine("ToString('u'): "+DateTime.Now.ToString("u")); Console.WriteLine("ToString('m'): "+DateTime.Now.ToString("m")); Console.WriteLine("ToString('M'): "+DateTime.Now.ToString("M")); Console.WriteLine("ToString('r'): "+DateTime.Now.ToString("r")); Console.WriteLine("ToString('R'): "+DateTime.Now.ToString("R")); Console.WriteLine("ToString('y'): "+DateTime.Now.ToString("y")); Console.WriteLine("ToString('Y'): "+DateTime.Now.ToString("Y")); Console.WriteLine("ToString('o'): "+DateTime.Now.ToString("o")); Console.WriteLine("ToString('O'): "+DateTime.Now.ToString("O")); Console.WriteLine("ToString('s'): "+DateTime.Now.ToString("s")); Console.ReadKey(); } }
}

  

 

  
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实用小方法

计算时间差

		//调用示例： DateDiff(Convert.ToDateTime("2019/03/30 11:13:10"), Convert.ToDateTime("2019/04/01 12:24:11")); DateDiff(Convert.ToDateTime("2019-03-30 11:13:10"), Convert.ToDateTime("2019-04-01 12:24:11")); /// <summary> /// 计算两个日期的时间间隔 /// </summary> /// <param name="DateTime1">第一个日期和时间</param> /// <param name="DateTime2">第二个日期和时间</param> /// <returns>返回间隔几天</returns> private static int DateDiff(DateTime DateTime1, DateTime DateTime2) { string dateDiff = null; TimeSpan ts1 = new TimeSpan(DateTime1.Ticks); TimeSpan ts2 = new TimeSpan(DateTime2.Ticks); TimeSpan ts = ts1.Subtract(ts2).Duration(); dateDiff = ts.Days.ToString() + "天" + ts.Hours.ToString() + "小时" + ts.Minutes.ToString() + "分钟" + ts.Seconds.ToString() + "秒"; Console.WriteLine(dateDiff); //只返回需要的时间间隔 return ts.Days; }

  

 

  
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C# DateTime转换为Unix时间戳

System.DateTime startTime = TimeZone.CurrentTimeZone.ToLocalTime(new System.DateTime(1970, 1, 1)); // 当地时区
long timeStamp = (long)(DateTime.Now - startTime).TotalSeconds; // 相差秒数
System.Console.WriteLine(timeStamp);

  

 

  
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Unix时间戳转换为C# DateTime

long unixTimeStamp = 1478162177;
System.DateTime startTime = TimeZone.CurrentTimeZone.ToLocalTime(new System.DateTime(1970, 1, 1)); // 当地时区
DateTime dt = startTime.AddSeconds(unixTimeStamp);
System.Console.WriteLine(dt.ToString("yyyy/MM/dd HH:mm:ss:ffff"));

  

 

  
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文章来源: czhenya.blog.csdn.net，作者：陈言必行，版权归原作者所有，如需转载，请联系作者。

原文链接：czhenya.blog.csdn.net/article/details/88125254