Aspose.email Task Reminder sets to 30-12-1899, In case where no reminder is present

Aspose.Email Product Family
1

if (!string.IsNullOrEmpty(tasksFields.Remindertime))
{
task.ReminderTime = DateTime.ParseExact(tasksFields.Remindertime, “ddd, dd MMM yyyy HH:mm:ss”, CultureInfo.InvariantCulture);
task.ReminderSet = true;
}
else
{
task.ReminderSet = false;
}
Task Reminder is default set to 30-12-1899 and time is set 05:30 .
I want to set none when there is no reminder .

2

Hello @kumarpiyush01,

We reproduced the issue with the latest Aspose.Email for .NET. Your code is correct, this is a bug on our side.

MapiTask always writes the named properties PidLidReminderTime (0x8502) and PidLidReminderSignalTime (0x8560) to the output, even when ReminderSet = false. They are written with a zero FILETIME value (1601-01-01 00:00:00 UTC) instead of being omitted. Outlook sees the properties present, converts the zero value to your local time zone and displays it — that’s your 30-12-1899 05:30 (05:30 = the IST +5:30 offset applied to 00:00 UTC).

We have logged the issue and will update you once it is resolved.

Issue ID(s): EMAILNET-41815

Thank you.

3

Workaround: please remove both properties before saving:

static MapiMessage StripReminder(MapiTask task)
{
    var ms = new MemoryStream();
    task.Save(ms, TaskSaveFormat.Msg);
    ms.Position = 0;
    var msg = MapiMessage.Load(ms);

    foreach (var p in new List<KeyValuePair<long, MapiProperty>>(msg.NamedProperties))
    {
        if (p.Value is MapiNamedProperty np &&
            (np.NameId == "8502" || np.NameId == "8560"))  // ReminderTime / ReminderSignalTime
        {
            msg.RemoveProperty(p.Key);
        }
    }
    return msg;
}