private void DemoteProperties()
{
this.calendarWriter.WriteProperty(PropertyId.Method, CalendarUtil.CalendarMethodToString(base.Context.Method));
this.calendarWriter.WriteProperty(PropertyId.ProductId, "Microsoft Exchange Server 2010");
this.calendarWriter.WriteProperty(PropertyId.Version, "2.0");
if (!string.IsNullOrEmpty(base.Context.CalendarName))
{
this.calendarWriter.StartProperty("X-WR-CALNAME");
this.calendarWriter.WritePropertyValue(base.Context.CalendarName);
}
if (base.Context.Type != CalendarType.Default)
{
this.calendarWriter.StartProperty("X-MICROSOFT-CALSCALE");
this.calendarWriter.WritePropertyValue(CalendarUtil.CalendarTypeToString(base.Context.Type));
}
}
internal static bool CanConvertToMeetingMessage(Item item)
{
return(CalendarUtil.GetICalMethod(item) != CalendarMethod.None || ObjectClass.IsFailedInboundICal(item.ClassName));
}
internal static BusyType BusyTypeFromString(string busyStatusString)
{
return(CalendarUtil.BusyTypeFromStringOrDefault(busyStatusString, BusyType.Busy));
}
protected override bool ValidateProperty(CalendarPropertyBase calendarProperty)
{
bool result = true;
PropertyId propertyId = calendarProperty.CalendarPropertyId.PropertyId;
if (propertyId <= PropertyId.DateTimeStart)
{
if (propertyId != PropertyId.Unknown)
{
if (propertyId == PropertyId.DateTimeStart)
{
if (calendarProperty is CalendarDateTime)
{
this.dtStart = (CalendarDateTime)calendarProperty;
}
else
{
result = false;
}
}
}
else if (string.Compare(calendarProperty.CalendarPropertyId.PropertyName, "X-MICROSOFT-RRULE", StringComparison.CurrentCultureIgnoreCase) == 0)
{
Recurrence recurrence = calendarProperty.Value as Recurrence;
if (this.xicalRule != null || recurrence == null || !this.ValidateRRule(recurrence))
{
result = false;
}
else
{
this.xicalRule = recurrence;
CalendarParameter parameter = calendarProperty.GetParameter("X-MICROSOFT-ISLEAPMONTH");
if (parameter != null)
{
bool?flag = CalendarUtil.BooleanFromString((string)parameter.Value);
if (flag == null)
{
result = false;
}
else
{
this.isLeapMonth = flag.Value;
}
}
}
}
else if (string.Compare(calendarProperty.CalendarPropertyId.PropertyName, "X-ALT-DESC", StringComparison.CurrentCultureIgnoreCase) == 0)
{
result = this.ProcessXAltDesc(calendarProperty);
}
}
else if (propertyId != PropertyId.Uid)
{
if (propertyId == PropertyId.RecurrenceRule)
{
Recurrence recurrence2 = calendarProperty.Value as Recurrence;
if (this.icalRule != null || recurrence2 == null || !this.ValidateRRule(recurrence2))
{
result = false;
}
else
{
this.icalRule = recurrence2;
}
}
}
else
{
string text = calendarProperty.Value as string;
if (text == null)
{
result = false;
}
else
{
this.uid = text;
}
}
return(result);
}