System.TimeZoneInfo.Validate C# (CSharp) Method

		private static void Validate (string id, TimeSpan baseUtcOffset, AdjustmentRule [] adjustmentRules)
		{
			if (id == null)
				throw new ArgumentNullException ("id");

			if (id == String.Empty)
				throw new ArgumentException ("id parameter is an empty string");

			if (baseUtcOffset.Ticks % TimeSpan.TicksPerMinute != 0)
				throw new ArgumentException ("baseUtcOffset parameter does not represent a whole number of minutes");

			if (baseUtcOffset > new TimeSpan (14, 0, 0) || baseUtcOffset < new TimeSpan (-14, 0, 0))
				throw new ArgumentOutOfRangeException ("baseUtcOffset parameter is greater than 14 hours or less than -14 hours");

#if STRICT
			if (id.Length > 32)
				throw new ArgumentException ("id parameter shouldn't be longer than 32 characters");
#endif

			if (adjustmentRules != null && adjustmentRules.Length != 0) {
				AdjustmentRule prev = null;
				foreach (AdjustmentRule current in adjustmentRules) {
					if (current == null)
						throw new InvalidTimeZoneException ("one or more elements in adjustmentRules are null");

					if ((baseUtcOffset + current.DaylightDelta < new TimeSpan (-14, 0, 0)) ||
							(baseUtcOffset + current.DaylightDelta > new TimeSpan (14, 0, 0)))
						throw new InvalidTimeZoneException ("Sum of baseUtcOffset and DaylightDelta of one or more object in adjustmentRules array is greater than 14 or less than -14 hours;");

					if (prev != null && prev.DateStart > current.DateStart)
						throw new InvalidTimeZoneException ("adjustment rules specified in adjustmentRules parameter are not in chronological order");
					
					if (prev != null && prev.DateEnd > current.DateStart)
						throw new InvalidTimeZoneException ("some adjustment rules in the adjustmentRules parameter overlap");

					if (prev != null && prev.DateEnd == current.DateStart)
						throw new InvalidTimeZoneException ("a date can have multiple adjustment rules applied to it");

					prev = current;
				}
			}
		}