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Unity/Csharp/日時

提供: 初心者エンジニアの簡易メモ
移動: 案内検索

日時表示

DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"); // HHにすると24時間表記となる
2019-02-28 22:57:20
DateTime.Now.ToString("yyyy-MM-dd hh:mm:ss"); // hhにすると12時間表記となる
2019-02-28 10:57:20
using System;
string GetYmdHm() {
		string h = ("0" + System.DateTime.Now.Hour.ToString ());
		string i = ("0" + System.DateTime.Now.Minute.ToString ());
		return System.DateTime.Now.Year.ToString() + "-" +
			System.DateTime.Now.Month.ToString() + "-" +
			System.DateTime.Now.Day.ToString() + " " +
			h.Substring(h.Length - 2, 2) + ":" +
			i.Substring(i.Length - 2, 2);
}

時間表示

using System;
DateTime.Now.ToString("T")
> 16:12:10

日付フォーマット一覧

https://msdn.microsoft.com/ja-jp/library/k494fzbf(v=VS.80).aspx

d :08/17/2000
D :Thursday, August 17, 2000
f :Thursday, August 17, 2000 16:32
F :Thursday, August 17, 2000 16:32:32
g :08/17/2000 16:32
G :08/17/2000 16:32:32
m :August 17
r :Thu, 17 Aug 2000 23:32:32 GMT
s :2000-08-17T16:32:32
t :16:32
T :16:32:32
u :2000-08-17 23:32:32Z
U :Thursday, August 17, 2000 23:32:32
y :August, 2000
dddd, MMMM dd yyyy :Thursday, August 17 2000
ddd, MMM d "'"yy :Thu, Aug 17 '00
dddd, MMMM dd :Thursday, August 17
M/yy :8/00
dd-MM-yy :17-08-00


unixtimeを取得

var now = DateTime.UtcNow;
long unixtime = (long)(now - new DateTime(1970, 1, 1)).TotalSeconds;

unixtimeとDatetime変換

https://gist.github.com/YuukiTsuchida/06ca3a1f0baf755651b0#file-unixtime