本文整理汇总了C#中System.DateTime.DateTime构造函数的典型用法代码示例。如果您正苦于以下问题：C# DateTime构造函数的具体用法？C# DateTime怎么用？C# DateTime使用的例子？那么恭喜您, 这里精选的构造函数代码示例或许可以为您提供帮助。您也可以进一步了解该构造函数所在类System.DateTime的用法示例。
在下文中一共展示了DateTime构造函数的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: Main
//引入命名空间
using System;
using System.Globalization;
using System.Text.RegularExpressions;
using System.Threading;
public class Example
{
public static void Main()
{
Console.WriteLine("Using the Persian Calendar:");
PersianCalendar persian = new PersianCalendar();
DateTime date1 = new DateTime(1389, 5, 27, persian);
Console.WriteLine(date1.ToString());
Console.WriteLine("{0}/{1}/{2}\n", persian.GetMonth(date1),
persian.GetDayOfMonth(date1),
persian.GetYear(date1));
Console.WriteLine("Using the Hijri Calendar:");
// Get current culture so it can later be restored.
CultureInfo dftCulture = Thread.CurrentThread.CurrentCulture;
// Define Hijri calendar.
HijriCalendar hijri = new HijriCalendar();
// Make ar-SY the current culture and Hijri the current calendar.
Thread.CurrentThread.CurrentCulture = new CultureInfo("ar-SY");
CultureInfo current = CultureInfo.CurrentCulture;
current.DateTimeFormat.Calendar = hijri;
string dFormat = current.DateTimeFormat.ShortDatePattern;
// Ensure year is displayed as four digits.
dFormat = Regex.Replace(dFormat, "/yy$", "/yyyy");
current.DateTimeFormat.ShortDatePattern = dFormat;
DateTime date2 = new DateTime(1431, 9, 9, hijri);
Console.WriteLine("{0} culture using the {1} calendar: {2:d}", current,
GetCalendarName(hijri), date2);
// Restore previous culture.
Thread.CurrentThread.CurrentCulture = dftCulture;
Console.WriteLine("{0} culture using the {1} calendar: {2:d}",
CultureInfo.CurrentCulture,
GetCalendarName(CultureInfo.CurrentCulture.Calendar),
date2);
}
private static string GetCalendarName(Calendar cal)
{
return Regex.Match(cal.ToString(), "\\.(\\w+)Calendar").Groups[1].Value;
}
}输出：
Using the Persian Calendar: 8/18/2010 12:00:00 AM 5/27/1389 Using the Hijri Calendar: ar-SY culture using the Hijri calendar: 09/09/1431 en-US culture using the Gregorian calendar: 8/18/2010
示例2: Main
//引入命名空间
using System;
using System.Globalization;
using System.Text.RegularExpressions;
using System.Threading;
public class Example
{
public static void Main()
{
Console.WriteLine("Using the Persian Calendar:");
PersianCalendar persian = new PersianCalendar();
DateTime date1 = new DateTime(1389, 5, 27, 16, 32, 0, persian);
Console.WriteLine(date1.ToString());
Console.WriteLine("{0}/{1}/{2} {3}{6}{4:D2}{6}{5:D2}\n",
persian.GetMonth(date1),
persian.GetDayOfMonth(date1),
persian.GetYear(date1),
persian.GetHour(date1),
persian.GetMinute(date1),
persian.GetSecond(date1),
DateTimeFormatInfo.CurrentInfo.TimeSeparator);
Console.WriteLine("Using the Hijri Calendar:");
// Get current culture so it can later be restored.
CultureInfo dftCulture = Thread.CurrentThread.CurrentCulture;
// Define Hijri calendar.
HijriCalendar hijri = new HijriCalendar();
// Make ar-SY the current culture and Hijri the current calendar.
Thread.CurrentThread.CurrentCulture = new CultureInfo("ar-SY");
CultureInfo current = CultureInfo.CurrentCulture;
current.DateTimeFormat.Calendar = hijri;
string dFormat = current.DateTimeFormat.ShortDatePattern;
// Ensure year is displayed as four digits.
dFormat = Regex.Replace(dFormat, "/yy$", "/yyyy");
current.DateTimeFormat.ShortDatePattern = dFormat;
DateTime date2 = new DateTime(1431, 9, 9, 16, 32, 18, hijri);
Console.WriteLine("{0} culture using the {1} calendar: {2:g}", current,
GetCalendarName(hijri), date2);
// Restore previous culture.
Thread.CurrentThread.CurrentCulture = dftCulture;
Console.WriteLine("{0} culture using the {1} calendar: {2:g}",
CultureInfo.CurrentCulture,
GetCalendarName(CultureInfo.CurrentCulture.Calendar),
date2);
}
private static string GetCalendarName(Calendar cal)
{
return Regex.Match(cal.ToString(), "\\.(\\w+)Calendar").Groups[1].Value;
}
}输出：
Using the Persian Calendar: 8/18/2010 4:32:00 PM 5/27/1389 16:32:00 Using the Hijri Calendar: ar-SY culture using the Hijri calendar: 09/09/1431 04:32 م en-US culture using the Gregorian calendar: 8/18/2010 4:32 PM
示例3: Main
//引入命名空间
using System;
using System.Globalization;
using System.Text.RegularExpressions;
using System.Threading;
public class Example
{
public static void Main()
{
Console.WriteLine("Using the Persian Calendar:");
PersianCalendar persian = new PersianCalendar();
DateTime date1 = new DateTime(1389, 5, 27, 16, 32, 18, 500, persian);
Console.WriteLine(date1.ToString("M/dd/yyyy h:mm:ss.fff tt"));
Console.WriteLine("{0}/{1}/{2} {3}{7}{4:D2}{7}{5:D2}.{6:G3}\n",
persian.GetMonth(date1),
persian.GetDayOfMonth(date1),
persian.GetYear(date1),
persian.GetHour(date1),
persian.GetMinute(date1),
persian.GetSecond(date1),
persian.GetMilliseconds(date1),
DateTimeFormatInfo.CurrentInfo.TimeSeparator);
Console.WriteLine("Using the Hijri Calendar:");
// Get current culture so it can later be restored.
CultureInfo dftCulture = Thread.CurrentThread.CurrentCulture;
// Define strings for use in composite formatting.
string dFormat;
string fmtString;
// Define Hijri calendar.
HijriCalendar hijri = new HijriCalendar();
// Make ar-SY the current culture and Hijri the current calendar.
Thread.CurrentThread.CurrentCulture = new CultureInfo("ar-SY");
CultureInfo current = CultureInfo.CurrentCulture;
current.DateTimeFormat.Calendar = hijri;
dFormat = current.DateTimeFormat.ShortDatePattern;
// Ensure year is displayed as four digits.
dFormat = Regex.Replace(dFormat, "/yy$", "/yyyy") + " H:mm:ss.fff";
fmtString = "{0} culture using the {1} calendar: {2:" + dFormat + "}";
DateTime date2 = new DateTime(1431, 9, 9, 16, 32, 18, 500, hijri);
Console.WriteLine(fmtString, current, GetCalendarName(hijri), date2);
// Restore previous culture.
Thread.CurrentThread.CurrentCulture = dftCulture;
dFormat = DateTimeFormatInfo.CurrentInfo.ShortDatePattern +" H:mm:ss.fff";
fmtString = "{0} culture using the {1} calendar: {2:" + dFormat + "}";
Console.WriteLine(fmtString,
CultureInfo.CurrentCulture,
GetCalendarName(CultureInfo.CurrentCulture.Calendar),
date2);
}
private static string GetCalendarName(Calendar cal)
{
return Regex.Match(cal.ToString(), "\\.(\\w+)Calendar").Groups[1].Value;
}
}输出：
8/18/2010 4:32:18.500 PM 5/27/1389 16:32:18.500 Using the Hijri Calendar: ar-SY culture using the Hijri calendar: 09/09/1431 16:32:18.500 en-US culture using the Gregorian calendar: 8/18/2010 16:32:18.500
示例4: Main
//引入命名空间
using System;
using System.Globalization;
using System.Text.RegularExpressions;
using System.Threading;
public class Example
{
public static void Main()
{
Console.WriteLine("Using the Persian Calendar:");
PersianCalendar persian = new PersianCalendar();
DateTime date1 = new DateTime(1389, 5, 27, 16, 32, 18, 500,
persian, DateTimeKind.Local);
Console.WriteLine("{0:M/dd/yyyy h:mm:ss.fff tt} {1}", date1, date1.Kind);
Console.WriteLine("{0}/{1}/{2} {3}{8}{4:D2}{8}{5:D2}.{6:G3} {7}\n",
persian.GetMonth(date1),
persian.GetDayOfMonth(date1),
persian.GetYear(date1),
persian.GetHour(date1),
persian.GetMinute(date1),
persian.GetSecond(date1),
persian.GetMilliseconds(date1),
date1.Kind,
DateTimeFormatInfo.CurrentInfo.TimeSeparator);
Console.WriteLine("Using the Hijri Calendar:");
// Get current culture so it can later be restored.
CultureInfo dftCulture = Thread.CurrentThread.CurrentCulture;
// Define strings for use in composite formatting.
string dFormat;
string fmtString;
// Define Hijri calendar.
HijriCalendar hijri = new HijriCalendar();
// Make ar-SY the current culture and Hijri the current calendar.
Thread.CurrentThread.CurrentCulture = new CultureInfo("ar-SY");
CultureInfo current = CultureInfo.CurrentCulture;
current.DateTimeFormat.Calendar = hijri;
dFormat = current.DateTimeFormat.ShortDatePattern;
// Ensure year is displayed as four digits.
dFormat = Regex.Replace(dFormat, "/yy$", "/yyyy") + " H:mm:ss.fff";
fmtString = "{0} culture using the {1} calendar: {2:" + dFormat + "} {3}";
DateTime date2 = new DateTime(1431, 9, 9, 16, 32, 18, 500,
hijri, DateTimeKind.Local);
Console.WriteLine(fmtString, current, GetCalendarName(hijri),
date2, date2.Kind);
// Restore previous culture.
Thread.CurrentThread.CurrentCulture = dftCulture;
dFormat = DateTimeFormatInfo.CurrentInfo.ShortDatePattern +" H:mm:ss.fff";
fmtString = "{0} culture using the {1} calendar: {2:" + dFormat + "} {3}";
Console.WriteLine(fmtString,
CultureInfo.CurrentCulture,
GetCalendarName(CultureInfo.CurrentCulture.Calendar),
date2, date2.Kind);
}
private static string GetCalendarName(Calendar cal)
{
return Regex.Match(cal.ToString(), "\\.(\\w+)Calendar").Groups[1].Value;
}
}输出：
Using the Persian Calendar: 8/18/2010 4:32:18.500 PM Local 5/27/1389 16:32:18.500 Local Using the Hijri Calendar: ar-SY culture using the Hijri calendar: 09/09/1431 16:32:18.500 Local en-US culture using the Gregorian calendar: 8/18/2010 16:32:18.500 Local