private StringBuilder ComposeFieldReminder(Property dtStart, Reminder reminder) {
StringBuilder result = new StringBuilder(60); // Estimate 60 is needed
result.Append("AALARM");
string typeParam = reminder.PropertyType;
if (typeParam != null) {
result.Append(";TYPE=");
result.Append(typeParam);
}
string valueParam = reminder.Value;
if (valueParam != null) {
result.Append(";VALUE=");
result.Append(valueParam);
}
AddXParams(result, reminder);
DateTime dateStart;
string dtStartVal = dtStart.Value;
dtStartVal = HandleLocalDateConversion(dtStartVal, TimeZone);
try {
dateStart = DateTime.ParseExact(dtStartVal, TimeUtils.getDateFormat(dtStartVal), CultureInfo.InvariantCulture);
} catch (FormatException) {
//is not possible
//TODO: what to do now?
dateStart = DateTime.Now;
}
DateTime dtAlarm = dateStart.AddMinutes(-reminder.Minutes);
String dtAlarmVal = dtAlarm.ToString("yyyyMMdd'T'HHmmss'Z'");
result.Append(":");
result.Append(dtAlarmVal);
result.Append(";");
if (reminder.Interval != 0)
result.Append(TimeUtils.getIso8601Duration(reminder.Interval.ToString()));
result.Append(";");
result.Append(reminder.RepeatCount);
result.Append(";");
if (reminder.SoundFile != null)
result.Append(reminder.SoundFile);
result.Append("\r\n");
return result;
}