/// <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);
}
/// <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;
}
