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Fehlerbehandlung, Logging und feldbezogene Validierung (Kapitel 13.2)

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Zentrale Exception-Behandlung (Dispatcher.UIThread.UnhandledException,
AppDomain, TaskScheduler) verhindert Abstürze und protokolliert Fehler
über AppLogger in eine rotierende Log-Datei im App-Datenverzeichnis.
Toast-Benachrichtigungen zeigen Erfolg/Fehler global an. Alle Dialoge
mit Formularfeldern zeigen Validierungsmeldungen jetzt direkt am
betroffenen Feld statt in einem Sammel-Label.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
This commit is contained in:
admin
2026-08-13 12:38:30 +02:00
co-authored by Claude Sonnet 5
parent 273f459119
commit db1afff7e4
27 changed files with 578 additions and 102 deletions
Download Patch File Download Diff File Expand all files Collapse all files
LehrerApp.Desktop/Views/Students/AddStudentDialog.axaml
+6 -3
View File
@@ -19,10 +19,14 @@
<StackPanel Grid.Column="0" Spacing="4">
<TextBlock Text="Nachname *" FontSize="12" Opacity="0.7"/>
<TextBox Text="{Binding LastName}" PlaceholderText="Mustermann" x:Name="LastNameBox"/>
<TextBlock Text="{Binding LastNameError}" Foreground="Red" FontSize="11"
IsVisible="{Binding LastNameError, Converter={x:Static StringConverters.IsNotNullOrEmpty}}"/>
</StackPanel>
<StackPanel Grid.Column="2" Spacing="4">
<TextBlock Text="Vorname *" FontSize="12" Opacity="0.7"/>
<TextBox Text="{Binding FirstName}" PlaceholderText="Max"/>
<TextBlock Text="{Binding FirstNameError}" Foreground="Red" FontSize="11"
IsVisible="{Binding FirstNameError, Converter={x:Static StringConverters.IsNotNullOrEmpty}}"/>
</StackPanel>
</Grid>
@@ -31,6 +35,8 @@
<StackPanel Grid.Column="0" Spacing="4">
<TextBlock Text="Geburtsdatum" FontSize="12" Opacity="0.7"/>
<TextBox Text="{Binding DateOfBirthText}" PlaceholderText="TT.MM.JJJJ"/>
<TextBlock Text="{Binding DateOfBirthError}" Foreground="Red" FontSize="11"
IsVisible="{Binding DateOfBirthError, Converter={x:Static StringConverters.IsNotNullOrEmpty}}"/>
</StackPanel>
<StackPanel Grid.Column="2" Spacing="4">
<TextBlock Text="Geschlecht" FontSize="12" Opacity="0.7"/>
@@ -99,9 +105,6 @@
AcceptsReturn="True" Height="70" TextWrapping="Wrap"/>
</StackPanel>
<!-- Validierungsfehler -->
<TextBlock Text="{Binding ValidationMessage}" Foreground="Red" FontSize="12"
IsVisible="{Binding ValidationMessage, Converter={x:Static StringConverters.IsNotNullOrEmpty}}"/>
</StackPanel>
</ScrollViewer>
LehrerApp.Desktop/Views/Students/ContactEditDialog.axaml
+4 -2
View File
@@ -17,6 +17,8 @@
<StackPanel Grid.Column="0" Spacing="4">
<TextBlock Text="Name *" FontSize="12" Opacity="0.7"/>
<TextBox x:Name="NameBox" Text="{Binding Name}" PlaceholderText="Name"/>
<TextBlock Text="{Binding NameError}" Foreground="Red" FontSize="11"
IsVisible="{Binding NameError, Converter={x:Static StringConverters.IsNotNullOrEmpty}}"/>
</StackPanel>
<StackPanel Grid.Column="2" Spacing="4">
<TextBlock Text="Beziehung" FontSize="12" Opacity="0.7"/>
@@ -56,6 +58,8 @@
<StackPanel Grid.Column="0" Spacing="4">
<TextBlock Text="Ungültig seit *" FontSize="12" Opacity="0.7"/>
<TextBox Text="{Binding InvalidSinceText}" PlaceholderText="TT.MM.JJJJ"/>
<TextBlock Text="{Binding InvalidSinceError}" Foreground="Red" FontSize="11"
IsVisible="{Binding InvalidSinceError, Converter={x:Static StringConverters.IsNotNullOrEmpty}}"/>
</StackPanel>
<StackPanel Grid.Column="2" Spacing="4">
<TextBlock Text="Grund" FontSize="12" Opacity="0.7"/>
@@ -72,8 +76,6 @@
</StackPanel>
</StackPanel>
<TextBlock Text="{Binding ValidationMessage}" Foreground="Red" FontSize="12"
IsVisible="{Binding ValidationMessage, Converter={x:Static StringConverters.IsNotNullOrEmpty}}"/>
</StackPanel>
</ScrollViewer>