[英]How to get the day name from a selected date?
我有这个: Datetime.Now();
或23/10/2009
我想要这个: Friday
对于本地日期时间 (GMT-5) 和使用公历。
//default locale
System.DateTime.Now.DayOfWeek.ToString();
//localized version
System.DateTime.Now.ToString("dddd");
为了使答案更完整:
如果本地化很重要,您应该使用Fredrik指出的“dddd”字符串格式 - MSDN“dddd”格式文章
如果你想知道你的代码在一周中的哪一天用它做某事, DateTime.Now.DayOfWeek
将完成这项工作。
如果您想向用户显示星期几, DateTime.Now.ToString("dddd")
将根据当前文化( “dddd”格式字符串上的 MSDN 信息DateTime.Now.ToString("dddd")
为您提供本地化的日期名称。
System.Threading.Thread.CurrentThread.CurrentUICulture.DateTimeFormat.GetDayName(System.DateTime.Now.DayOfWeek)
要么
System.Threading.Thread.CurrentThread.CurrentUICulture.DateTimeFormat.GetDayName(DateTime.Parse("23/10/2009").DayOfWeek)
DateTime.Now.DayOfWeek
实际上很容易猜到。
对于任何给定日期:
DateTime dt = //....
DayOfWeek dow = dt.DayOfWeek; //enum
string str = dow.ToString(); //string
DateTime now = DateTime.Now
string s = now.DayOfWeek.ToString();
试试这个:
DateTime.Now.DayOfWeek
您正在寻找 DayOfWeek 属性。
这是msdn 文章。
如果我们在这里使用 String.Format 呢?
DateTime today = DateTime.Today; String.Format("{0:dd-MM}, {1:dddd}", today, today) //In dd-MM format String.Format("{0:MM-dd}, {1:dddd}", today, today) //In MM-dd format
(DateTime.Parse((Eval("date").ToString()))).DayOfWeek.ToString()
在Eval("date") 的地方,您可以使用任何日期...获取日期名称
我使用这个扩展方法:
public static string GetDayName(this DateTime date)
{
string _ret = string.Empty; //Only for .NET Framework 4++
var culture = new System.Globalization.CultureInfo("es-419"); //<- 'es-419' = Spanish (Latin America), 'en-US' = English (United States)
_ret = culture.DateTimeFormat.GetDayName(date.DayOfWeek); //<- Get the Name
_ret = culture.TextInfo.ToTitleCase(_ret.ToLower()); //<- Convert to Capital title
return _ret;
}
Random Rnd = new Random();
RandomDates Rdate = new RandomDates();
PaymentDetails Payd = new PaymentDetails();
DayOfWeek strDay = DateTime.Today.DayOfWeek;
var dateTime = DateTime.Now;
var dateValue2 = dateTime.ToString(@"MM\/dd\/yyyy");
StepDescription = "Fill MatterInformation. ";
Console.Write(" Input the Day : ");
dt = Convert.ToInt32(Console.ReadLine());
Console.Write(" Input the Month : ");
mn = Convert.ToInt32(Console.ReadLine());
Console.Write(" Input the Year : ");
yr = Convert.ToInt32(Console.ReadLine());
DateTime d = new DateTime(2021, 04, yr);
var culture = System.Threading.Thread.CurrentThread.CurrentCulture;
var diff = d.DayOfWeek - culture.DateTimeFormat.FirstDayOfWeek;
if (diff < 0)
diff += 7;
var x = d.AddDays(-diff).Date;
dateTime = DateTime.Now;
dateValue2 = dateTime.ToString(@"MM\/dd\/yyyy");
Console.WriteLine($"Date Value: {dateValue2}");
// strDay =
}
if (!strDay.Equals("Sunday") | !strDay.Equals("Saturday"))
{
Console.WriteLine("___________________OK____________________________________________");
// string NotificateionDate = Rdate.DateWithin_PastDays(Rnd.Next(30, 260)).ToString(@"MM\/dd\/yyyy");
// CustomLibrary.seWaitUntilElementIsVisible(10, NotiFiedDateTab.Actions.seGetLocator(), "NotiFiedDateTab");
NotiFiedDateTab.Actions.Set(ControlPropertyNames.Text, dateValue2);
}
else
{
Console.WriteLine("_________________________NOT______________________________________");
if (strDay.Equals("Sunday"))
{
dateTime = dateTime.AddDays(-2);
dateValue2 = dateTime.ToString(@"MM\/dd\/yyyy");
NotiFiedDateTab.Actions.Set(ControlPropertyNames.Text, dateValue2);
}
else if (strDay.Equals("Saturday"))
{
dateTime = dateTime.AddDays(-1);
dateValue2 = dateTime.ToString(@"MM\/dd\/yyyy");
NotiFiedDateTab.Actions.Set(ControlPropertyNames.Text, dateValue2);
}
}
}
这里更简单
DateTime dt;
string yourdate = dt.DayOfWeek.ToString()
比宣布多余的 DayOfWeek 好
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace GuessTheDay
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("Enter the Day Number ");
int day = int.Parse(Console.ReadLine());
Console.WriteLine(" Enter The Month");
int month = int.Parse(Console.ReadLine());
Console.WriteLine("Enter Year ");
int year = int.Parse(Console.ReadLine());
DateTime mydate = new DateTime(year,month,day);
string formatteddate = string.Format("{0:dddd}", mydate);
Console.WriteLine("The day should be " + formatteddate);
}
}
}
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