Fixed the display date of the calendar items. Created test project for core library, included tests for recurring calendar events.

2025-12-29 14:10:09 +01:00
parent f79305f0a6
commit 8613e92b31
33 changed files with 1168 additions and 173 deletions
@@ -215,7 +215,9 @@ public static class OutlookIntegratorExtensions
        {
            if (recurrence.Range.Type == RecurrenceRangeType.EndDate && recurrence.Range.EndDate != null)
            {
-                ruleBuilder.Append($"UNTIL={recurrence.Range.EndDate.Value:yyyyMMddTHHmmssZ};");
+                // RFC 5545 requires YYYYMMDD or YYYYMMDDTHHMMSSinvalid format (no dashes or colons)
+                var untilDate = recurrence.Range.EndDate.Value.DateTime.ToString("yyyyMMdd'T'HHmmss'Z'", System.Globalization.CultureInfo.InvariantCulture);
+                ruleBuilder.Append($"UNTIL={untilDate};");
            }
            else if (recurrence.Range.Type == RecurrenceRangeType.Numbered && recurrence.Range.NumberOfOccurrences.HasValue)
            {