Compares the date against 1 (after) or 2 (between) dates. - CSharp System

CSharp examples for System:DateTime Calculate

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Description

Compares the date against 1 (after) or 2 (between) dates.

Demo Code


using System.Threading.Tasks;
using System.Text;
using System.Linq;
using System.Collections.Generic;
using System;//from www .j a  v a 2  s . co m

public class Main{
        /// <summary>
        /// Compares the date against 1 (after) or 2 (between) dates.
        /// </summary>
        /// <param name="dateTime"></param>
        /// <param name="start">The starting date time</param>
        /// <param name="end">(Optional) The ending date time</param>
        /// <param name="dateInclusion">Inclusion or exclusion of start/end date.  Default is Inclusive if null.</param>
        /// <param name="timeZone">Timezone to convert all dates to.  (If used, ensure all dates are in utc)</param>
        /// <param name="dateOnly">Compare date only</param>
        /// <returns></returns>
        public static bool Between(this DateTime dateTime, DateTime start, DateTime? end, DateInclusion dateInclusion, TimeZoneInfo timeZone = null, bool dateOnly = false)
        {
            if (timeZone != null)
            {
                dateTime = TimeZoneInfo.ConvertTime(dateTime, timeZone);
                start = TimeZoneInfo.ConvertTime(start, timeZone);
                if (end.HasValue) end = TimeZoneInfo.ConvertTime(end.Value, timeZone);
            }

            bool begin, tail = true;

            switch (dateInclusion)
            {
                case DateInclusion.Inclusive:
                    if (dateOnly)
                    {
                        begin = dateTime.Date >= start.Date;
                        if (end.HasValue) tail = dateTime.Date <= end.Value.Date;
                    }
                    else
                    {
                        begin = dateTime >= start;
                        if (end.HasValue) tail = dateTime <= end.Value;
                    }

                    break;
                case DateInclusion.Exclusive:
                    if (dateOnly)
                    {
                        begin = dateTime.Date > start.Date;
                        if (end.HasValue) tail = dateTime.Date < end.Value.Date;
                    }
                    else
                    {
                        begin = dateTime > start;
                        if (end.HasValue) tail = dateTime < end.Value;
                    }
                    break;
                case DateInclusion.InclusiveStart:
                    if (dateOnly)
                    {
                        begin = dateTime.Date >= start.Date;
                        if (end.HasValue) tail = dateTime.Date < end.Value.Date;
                    }
                    else
                    {
                        begin = dateTime >= start;
                        if (end.HasValue) tail = dateTime < end.Value;
                    }
                    break;
                case DateInclusion.InclusiveEnd:
                    if (dateOnly)
                    {
                        begin = dateTime.Date > start.Date;
                        if (end.HasValue) tail = dateTime.Date <= end.Value.Date;
                    }
                    else
                    {
                        begin = dateTime > start;
                        if (end.HasValue) tail = dateTime <= end.Value;
                    }
                    break;
                default:
                    if (dateOnly)
                    {
                        begin = dateTime.Date >= start.Date;
                        if (end.HasValue) tail = dateTime.Date <= end.Value.Date;
                    }
                    else
                    {
                        begin = dateTime >= start;
                        if (end.HasValue) tail = dateTime <= end.Value;
                    }
                    break;
            }

            return begin && tail;
        }
}

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