protected override void InternalCopyFromModified(IProperty srcProperty) { ITimeZoneProperty timeZoneProperty = srcProperty as ITimeZoneProperty; if (timeZoneProperty == null) { throw new UnexpectedTypeException("ITimeZoneProperty", srcProperty); } if (!this.TimeZoneExistsOnItem() || !TimeZoneConverter.IsClientTimeZoneEquivalentToServerTimeZoneRule(timeZoneProperty.TimeZone, this.TimeZone, this.EffectiveTime)) { base.XsoItem[CalendarItemBaseSchema.StartTimeZone] = timeZoneProperty.TimeZone; base.XsoItem[CalendarItemBaseSchema.EndTimeZone] = timeZoneProperty.TimeZone; base.XsoItem.Delete(CalendarItemBaseSchema.TimeZoneBlob); } }