Create an array or List of all dates between two dates [duplicate]

LINQ:

Enumerable.Range(0, 1 + end.Subtract(start).Days)          .Select(offset => start.AddDays(offset))          .ToArray(); 

For loop:

var dates = new List<DateTime>();for (var dt = start; dt <= end; dt = dt.AddDays(1)){   dates.Add(dt);}

EDIT:As for padding values with defaults in a time-series, you could enumerate all the dates in the full date-range, and pick the value for a date directly from the series if it exists, or the default otherwise. For example:

var paddedSeries = fullDates.ToDictionary(date => date, date => timeSeries.ContainsDate(date)                                                ? timeSeries[date] : defaultValue);

public static IEnumerable<DateTime> GetDateRange(DateTime startDate, DateTime endDate){    if (endDate < startDate)        throw new ArgumentException("endDate must be greater than or equal to startDate");    while (startDate <= endDate)    {        yield return startDate;        startDate = startDate.AddDays(1);    }}

I know this is an old post but try using an extension method:

    public static IEnumerable<DateTime> Range(this DateTime startDate, DateTime endDate)    {        return Enumerable.Range(0, (endDate - startDate).Days + 1).Select(d => startDate.AddDays(d));    }

and use it like this

    var dates = new DateTime(2000, 1, 1).Range(new DateTime(2000, 1, 31));

Feel free to choose your own dates, you don't have to restrict yourself to January 2000.