DateTime.Now.ToString () Time formatting

April 24, 2008
System.DateTime.Now.ToString ("D");
2008-4-24
System.DateTime.Now.ToString ("D");
April 24, 2008 16:30:15
System.DateTime.Now.ToString ("F");
April 24, 2008 16:30
System.DateTime.Now.ToString ("F");
2008-4-24 16:30:15
System.DateTime.Now.ToString ("G");
2008-4-24 16:30
System.DateTime.Now.ToString ("G");
16:30:15
System.DateTime.Now.ToString ("T");
16:30 System.DateTime.Now.ToString ("T");
April 24, 2008 8:30:15
System.DateTime.Now.ToString ("U");
2008-04-24 16:30:15z
System.DateTime.Now.ToString ("U");
April 24
System.DateTime.Now.ToString ("M");
System.DateTime.Now.ToString ("M");
Tue, APR 16:30:15 GMT

System.DateTime.Now.ToString ("R");
System.DateTime.Now.ToString ("R");
April 2008
System.DateTime.Now.ToString ("Y");
System.DateTime.Now.ToString ("Y");
2008-04-24t15:52:19.1562500+08:00
System.DateTime.Now.ToString ("O");
System.DateTime.Now.ToString ("O");
2008-04-24t16:30:15
System.DateTime.Now.ToString ("s");
2008-04-24 15:52:19
System.DateTime.Now.ToString ("Yyyy-mm-dd HH:mm:ss:ffff");
April 2008 24 15:56 48 seconds
System.DateTime.Now.ToString ("yyyy mm month dd hh when mm minutes ss seconds");
Tuesday, April 24 2008
System.DateTime.Now.ToString ("dddd, MMMM dd yyyy");
II, April 24 ' 08
System.DateTime.Now.ToString ("ddd, MMM d \" ' \ "yy");
Tuesday, April 24
System.DateTime.Now.ToString ("dddd, MMMM dd");
4-08 System.DateTime.Now.ToString ("M/yy");
24-04-08 System.DateTime.Now.ToString ("Dd-mm-yy"); /
/character conversion converted to string 12345.ToString ("n");
Generate 12,345.00 12345.ToString ("C");
Generate ￥12,345.00 12345.ToString ("E");
Generate 1.234500e+004 12345.ToString ("F4");
Generate 12345.0000 12345.ToString ("x");
Generate 3039 (16 binary) 12345.ToString ("P");
Generate 1,234,500//year sales, profit for the quarter, new customers this month
Today DateTime.Now.Date.ToShortDateString ();
Yesterday, it was today's date minus one DateTime.Now.AddDays (-1). ToShortDateString ();
Tomorrow, in the same vein, add a DateTime.Now.AddDays (1). ToShortDateString ();
This week (knowing that the first day of the week is the day of the week and that the first day of the week is a few days ago, it is important to note that every week here is from Sunday to Saturday DateTime.Now.AddDays (convert.todouble (0- Convert.ToInt16 (DateTime.Now.DayOfWeek))). ToShortDateString ();
DateTime.Now.AddDays (Convert.todouble (6-convert.toint16 (DateTime.Now.DayOfWeek))). ToShortDateString ();
If you do not understand, then look at the Chinese display of the day of the week should understand the method
Since DayOfWeek returns the number of days of the week, we want to convert it into Chinese characters to facilitate our reading, some people may use switch to a control, in fact, not so troublesome
string[] Day = new string[]{"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};
Day[convert.toint16 (DateTime.Now.DayOfWeek)];
Last week, the same thing, a week is 7 days, last week is this week minus 7 days, next week is the same DateTime.Now.AddDays (Convert.todouble (0-convert.toint16 ( DateTime.Now.DayOfWeek)))-7). ToShortDateString ();
DateTime.Now.AddDays (Convert.todouble (6-convert.toint16 (DateTime.Now.DayOfWeek))-7). ToShortDateString ();
Next week DateTime.Now.AddDays (Convert.todouble ((0-convert.toint16 (DateTime.Now.DayOfWeek)) + 7). ToShortDateString ();
DateTime.Now.AddDays (Convert.todouble ((6-convert.toint16 (DateTime.Now.DayOfWeek)) + 7). ToShortDateString ();
This month, many people will say that the first day of this month is definitely number 1th, and the last day is the next month minus another day. Of course it's right.
General wording DateTime.Now.Year.ToString () + DateTime.Now.Month.ToString () + "1";
First day DateTime.Parse (DateTime.Now.Year.ToString () + DateTime.Now.Month.ToString () + "1"). AddMonths (1). AddDays (-1). ToShortDateString ();//Last Day
Skillfully using the C # ToString character formatting simpler DateTime.Now.ToString ("yyyy-mm-01");
DateTime.Parse (DateTime.Now.ToString ("yyyy-mm-01")). AddMonths (1). AddDays (-1). ToShortDateString ();
Last month, subtract one month datetime.parse (DateTime.Now.ToString ("yyyy-mm-01")). AddMonths (-1). ToShortDateString ();
DateTime.Parse (DateTime.Now.ToString ("yyyy-mm-01")). AddDays (-1). ToShortDateString ();
Next month, add a month datetime.parse (DateTime.Now.ToString ("yyyy-mm-01")). AddMonths (1). ToShortDateString ();
DateTime.Parse (DateTime.Now.ToString ("yyyy-mm-01")). AddMonths (2). AddDays (-1). ToShortDateString ();
7 days after DateTime.Now.Date.ToShortDateString (); DateTime.Now.AddDays (7). ToShortDateString ();
7 days ago DateTime.Now.AddDays (-7). ToShortDateString (); DateTime.Now.Date.ToShortDateString ();
This year, formatting with ToString's characters makes it easy to figure out the first and last day of the year DateTime.Parse (DateTime.Now.ToString ("yyyy-01-01")). ToShortDateString ();
DateTime.Parse (DateTime.Now.ToString ("yyyy-01-01")). AddYears (1). AddDays (-1). ToShortDateString ();
Last year, no more explaining it DateTime.Parse (DateTime.Now.ToString ("yyyy-01-01")). AddYears (-1). ToShortDateString ();
DateTime.Parse (DateTime.Now.ToString ("yyyy-01-01")). AddDays (-1). ToShortDateString ();
Next year DateTime.Parse (DateTime.Now.ToString ("yyyy-01-01")). AddYears (1). ToShortDateString ();
DateTime.Parse (DateTime.Now.ToString ("yyyy-01-01")). AddYears (2). AddDays (-1). ToShortDateString ();
This quarter, many people will feel the difficulty here, need to write a long process to judge. In fact, we all know that four quarters a year, three months a quarter
First we push the date to the first month of the quarter, and then the first day of the month is the first day of the quarter. DateTime.Now.AddMonths (0-((datetime.now.month-1)% 22)). ToString ("yyyy-mm-01");
Similarly, the last day of the quarter is the first day of the next quarter minus one datetime.parse (DateTime.Now.AddMonths (((datetime.now.month-1)% 22)). ToString ("yyyy-mm-01")). AddDays (-1). ToShortDateString ();
Next quarter, I believe you all know .... DateTime.Now.AddMonths (((datetime.now.month-1)% 22)). ToString ("yyyy-mm-01");
DateTime.Parse (DateTime.Now.AddMonths (6-((datetime.now.month-1)% 22)). ToString ("yyyy-mm-01")). AddDays (-1). ToShortDateString ();
Last quarter DateTime.Now.AddMonths ( -22-((datetime.now.month-1)% 22)). ToString ("yyyy-mm-01");
DateTime.Parse (DateTime.Now.AddMonths (0-((datetime.now.month-1)% 22)). ToString ("yyyy-mm-01")). AddDays (-1). ToShortDateString ();

DateTime.Now.ToString () Time formatting