显示过去了多长时间代码,CSharp代码库,德仔网

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【CSharp】显示过去了多长时间

作者:宇航 / 发布于2015/9/22/ 815


	public string HowLongBeforeNow
	 {
	 get
	 {
	 var ts = new TimeSpan(DateTime.UtcNow.Ticks - CreatedDate.Ticks);
	 var delta = ts.TotalSeconds;
	
	
	 const int second = 1;
	 const int minute = 60 * second;
	 const int hour = 60 * minute;
	 const int day = 24 * hour;
	 const int month = 30 * day;
	 if (delta < 0)
	 {
	 throw new InvalidDataException("The CreatedDate can not be gather than today.");
	 }
	 if (delta < 1 * minute)
	 {
	 return ts.Seconds == 1 ? "1 second ago" : ts.Seconds + " seconds ago";
	 }
	 if (delta < 2 * minute)
	 {
	 return "1 minute ago";
	 }
	 if (delta < 45 * minute)
	 {
	 return ts.Minutes + " minutes ago";
	 }
	 if (delta < 90 * minute)
	 {
	 return "1 hour ago";
	 }
	 if (delta < 24 * hour)
	 {
	 return ts.Hours + " hours ago";
	 }
	 if (delta < 48 * hour)
	 {
	 return "yesterday";
	 }
	 if (delta < 30 * day)
	 {
	 return ts.Days + " days ago";
	 }
	 if (delta < 12 * month)
	 {
	 var months = Convert.ToInt32(Math.Floor((double)ts.Days / 30));
	 return months <= 1 ? "1 month ago" : months + " months ago";
	 }
	 var years = Convert.ToInt32(Math.Floor((double)ts.Days / 365));
	 return years <= 1 ? "1 year ago" : years + " years ago";
	 }
	 }

	

	.how-long-ago {
	 font-style: italic;
	 color: #777;
	 }

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