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在C中获取两个DateTime之间的所有DateTime#

datetime c#

Serkan Hekimoglu · 技术社区 · 16 年前

DateTime s、我想得到所有 日期时间 在这两个日期之间。例如,如果我的日期是01.01.2010-05.01.2010,我的函数应该返回一个日期列表(list),它必须包含01.01.2010、02.01.2010、03.01.2010、04.01.2010和05.01.2010。

我写了一个这样的函数。如果我的约会是在一个月内的话,效果很好。如果我的日期是2010年1月1日-2010年2月5日,那就不行了。因为月份变了,我的功能无法处理。C中是否有函数返回两个日期之间的所有日期?或者我该如何处理月变化?

public void GetAllDatesAndInitializeTickets(DateTime startingDate, DateTime endingDate)
    {
        List<DateTime> allDates = new List<DateTime>();

        int starting = startingDate.Day;
        int ending = endingDate.Day;

        for (int i = starting; i <= ending; i++)
        {
            allDates.Add(new DateTime(startingDate.Year, startingDate.Month, i));
        }

问题解决了,请看Tim Robinson的简单答案。

8 回复 | 直到 10 年前

138

Tim Robinson 16 年前

DateTime int . DateTime.AddDays

for (DateTime date = startingDate; date <= endingDate; date = date.AddDays(1))
    allDates.Add(date);

Matt Hamilton 16 年前

public IEnumerable<DateTime> DateRange(DateTime fromDate, DateTime toDate)
{
    return Enumerable.Range(0, toDate.Subtract(fromDate).Days + 1)
                     .Select(d => fromDate.AddDays(d));
}

Darin Dimitrov 16 年前

public IEnumerable<DateTime> GetAllDatesAndInitializeTickets(DateTime startingDate, DateTime endingDate)
{
    if (endingDate < startingDate)
    {
        throw new ArgumentException("endingDate should be after startingDate");
    }
    var ts = endingDate - startingDate;
    for (int i = 0; i < ts.TotalDays; i++)
    {
        yield return startingDate.AddDays(i);
    }
}

Jamiec 16 年前

你太接近了。。。只是不要用一天,用整个日期。

static IEnumerable<DateTime> GetAllDatesAndInitializeTickets(DateTime startingDate, DateTime endingDate)
{
    List<DateTime> allDates = new List<DateTime>();


    for (DateTime i = startingDate; i <= endingDate; i = i.AddDays(1))
    {
        allDates.Add(i);
    }
    return allDates.AsReadOnly();
}

Kamil Budziewski 13 年前

如果频率是每周或每月一次,这就可以了-你可以根据需要定制它。

    protected static Dictionary<DateTime, String> getDateRange(String lowerDate, String higherDate, String frequency)
    {
        DateTime startDate, endDate;
        startDate = Convert.ToDateTime(lowerDate);
        endDate = Convert.ToDateTime(higherDate);

        Dictionary<DateTime, String> returnDict = new Dictionary<DateTime, String>();

        while (frequency.Equals("weekly") ? (startDate.AddDays(7) <= endDate) : (startDate.AddMonths(1) <= endDate))
        {
            if (frequency.Equals("weekly"))
            {
                returnDict.Add(startDate, startDate + "-" + startDate.AddDays(7));
                startDate = startDate.AddDays(8);
            }
            if (frequency.Equals("monthly"))
            {
                returnDict.Add(startDate, startDate + "-" + startDate.AddMonths(1));
                startDate = startDate.AddMonths(1).AddDays(1);
            }
        }

        returnDict.Add(startDate, startDate + "-" + endDate);

        return returnDict;
    }

timi2shoes 11 年前

如果日期包含不同的时间,顶级解决方案将失败。以下是一个解决方案,可以让您全天、全天、全天工作:

所有日期:

static public List<string> get_days_between_two_dates(DateTime start_date, DateTime end_date)
    {
        List<string> days_list = new List<string>();
        DateTime temp_start;
        DateTime temp_end;

        //--Normalize dates by getting rid of minues since they will get in the way when doing the loop
        temp_start = new DateTime(start_date.Year, start_date.Month, start_date.Day);
        temp_end = new DateTime(end_date.Year, end_date.Month, end_date.Day);

        //--Example Should return
        //--1-12-2014 5:59AM - 1-13-2014 6:01AM return 12 and 13
        for (DateTime date = temp_start; date <= temp_end; date = date.AddDays(1))
        {
            days_list.Add(date.ToShortDateString());
        }

        return days_list;
    }

所有时间:

static public List<string> get_hours_between_two_dates(DateTime start_date, DateTime end_date)
    {
        List<string> hours_24_list = new List<string>();
        DateTime temp_start;
        DateTime temp_end;

        //--Normalize dates by getting rid of minutes since they will get in the way when doing the loop
        temp_start = new DateTime(start_date.Year, start_date.Month, start_date.Day, start_date.Hour, 0, 0);
        temp_end = new DateTime(end_date.Year, end_date.Month, end_date.Day, end_date.Hour, 0, 0);

        //--Example Should return
        //--5:59AM - 6:01AM return 5am and 6am
        for (DateTime date = temp_start; date <= temp_end; date = date.AddHours(1))
        {
            hours_24_list.Add(date.ToShortTimeString());
        }

        return hours_24_list;
    }

slugster Joey Cai 5 年前

AddDays()

class Program
{
    static void Main(string[] args)
    {
        GetDates(new DateTime(2010, 1, 1), new DateTime(2010, 2, 5));

        Console.ReadKey();
    }

    static List<DateTime> GetDates(DateTime startDate, DateTime endDate)
    {
        List<DateTime> dates = new List<DateTime>();

        while ((startDate = startDate.AddDays(1)) < endDate)
            dates.Add(startDate);

        return dates;
    }
}

Enumerable.Range() answer from Matt 是一个更好的解决方案。

benka Csaba 10 年前

static IEnumerable<DateTime> GetAllDatesAndInitializeTickets(DateTime startingDate, DateTime endingDate)
{
    List<DateTime> allDates = new List<DateTime>();


    for (DateTime i = startingDate; i <= endingDate; i = i.AddDays(1))
    {
        allDates.Add(i);
    }
    return allDates.AsReadOnly();
}