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CalendarDatePicker: DateTimeOffset-Felder nullbar machen
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CalendarDatePicker.SelectedDate ist DateTimeOffset?, die per DatePicker-
zu-CalendarDatePicker-Umstellung betroffenen ViewModel-Eigenschaften
waren aber nicht-nullbares DateTimeOffset. Der alte DatePicker tolerierte
das, CalendarDatePickers Bindung nicht - Feld blieb leer und ein
Konvertierungsfehler wurde beim Auswählen geworfen.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
This commit is contained in:
admin
2026-09-01 17:19:07 +02:00
co-authored by Claude Sonnet 5
parent d297f9f109
commit 09e97efb61
5 changed files with 25 additions and 14 deletions
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LehrerApp.Desktop/ViewModels/Groups/WebUntisLessonAbsenceComparisonViewModel.cs
+4 -4
View File
@@ -48,8 +48,8 @@ public partial class WebUntisLessonAbsenceComparisonViewModel : ObservableObject
new Dictionary<DateOnly, ParticipationSession>();
public ObservableCollection<WebUntisLessonAbsenceRow> Rows { get; } = [];
[ObservableProperty] private DateTimeOffset _startDate = DateTimeOffset.Now.AddMonths(-2);
[ObservableProperty] private DateTimeOffset _endDate = DateTimeOffset.Now;
[ObservableProperty] private DateTimeOffset? _startDate = DateTimeOffset.Now.AddMonths(-2);
[ObservableProperty] private DateTimeOffset? _endDate = DateTimeOffset.Now;
[ObservableProperty] private string _status = "Zeitraum wählen und Fehlzeiten laden.";
[ObservableProperty] private bool _busy;
[ObservableProperty] private bool _markUnknownAsPresent;
@@ -73,8 +73,8 @@ public partial class WebUntisLessonAbsenceComparisonViewModel : ObservableObject
return;
}
var start = DateOnly.FromDateTime(StartDate.LocalDateTime);
var end = DateOnly.FromDateTime(EndDate.LocalDateTime);
var start = DateOnly.FromDateTime((StartDate ?? DateTimeOffset.Now).LocalDateTime);
var end = DateOnly.FromDateTime((EndDate ?? DateTimeOffset.Now).LocalDateTime);
if (end < start) { Status = "Das Enddatum darf nicht vor dem Startdatum liegen."; return; }
Busy = true; Rows.Clear();
try