asp.net - 如何在asp.net c#中将日期字符串“dd/MM/yyyy”格式转换为“MM/dd/yyyy”？

Question

我想在 c# 示例中将字符串日期格式“dd/MM/yyyy”转换为“MM/dd/yyyy”

 string d ="25/02/2012";  i want to convert into 02/25/2012

Answer 1

您可以将其解析为DateTime对象DateTime.ParseExact，然后使用ToString(“MM/dd/yyyy”) to display theDateTime` 对象之类的。

string d ="25/02/2012";
DateTime dt = DateTime.ParseExact(d, "d/M/yyyy", CultureInfo.InvariantCulture);
// for both "1/1/2000" or "25/1/2000" formats
string newString = dt.ToString("MM/dd/yyyy");

确保包括using System.Globalization;在顶部。

Answer 2

DateTime dt = new DateTime(2008, 3, 9, 16, 5, 7, 123);
String.Format("{0:y yy yyy yyyy}", dt);  // "8 08 008 2008"   year
String.Format("{0:M MM MMM MMMM}", dt);  // "3 03 Mar March"  month
String.Format("{0:d dd ddd dddd}", dt);  // "9 09 Sun Sunday" day
String.Format("{0:h hh H HH}",     dt);  // "4 04 16 16"      hour 12/24
String.Format("{0:m mm}",          dt);  // "5 05"            minute
String.Format("{0:s ss}",          dt);  // "7 07"            second
String.Format("{0:f ff fff ffff}", dt);  // "1 12 123 1230"   sec.fraction
String.Format("{0:F FF FFF FFFF}", dt);  // "1 12 123 123"    without zeroes
String.Format("{0:t tt}",          dt);  // "P PM"            A.M. or P.M.
String.Format("{0:z zz zzz}",      dt);  // "-6 -06 -06:00"   time zone
String.Format("{0:M/d/yyyy}", dt);            // "3/9/2008"
String.Format("{0:MM/dd/yyyy}", dt);          // "03/09/2008"
String.Format("{0:ddd, MMM d, yyyy}", dt);    // "Sun, Mar 9, 2008"
String.Format("{0:dddd, MMMM d, yyyy}", dt);  // "Sunday, March 9, 2008"
String.Format("{0:MM/dd/yy}", dt);            // "03/09/08"
String.Format("{0:MM/dd/yyyy}", dt);          // "03/09/2008"

Answer 3

尝试这个：

string d ="25/02/2012";  
DateTime dtReturn = DateTime.MinValue;

DateTime.TryParseExact(d , "dd/MM/yyyy", dateFormat,
DateTimeStyles.AllowWhiteSpaces, out dtReturn)

将返回“2/25/2012 12:00:00 AM”

Answer 4

DateTime dt = DateTime.ParseExact(your string date, "d/M/yyyy",
                                  CultureInfo.InvariantCulture);
// for both "1/1/2000" or "25/1/2000" formats
string ndt = dt.ToString("MM/dd/yyyy");

也使用这个命名空间：using System.Globalization;