Explicitly lock inputs in MemberAdminWindow

Elwig/App.xaml.cs

@@ -8,6 +8,9 @@ using Elwig.Helpers;
 using Elwig.Helpers.Weighing;
 using System.Collections.Generic;
 using System.Windows.Threading;
+using System.Globalization;
+using System.Threading;
+using System.Windows.Markup;
 
 namespace Elwig {
     public partial class App : Application {
@@ -32,6 +35,16 @@ namespace Elwig {
         }
 
         protected override void OnStartup(StartupEventArgs evt) {
+            var locale = new CultureInfo("de-DE");  // de-AT uses ' ' as thousands separator :(
+            Thread.CurrentThread.CurrentCulture = locale;
+            Thread.CurrentThread.CurrentUICulture = locale;
+            CultureInfo.DefaultThreadCurrentCulture = locale;
+            CultureInfo.DefaultThreadCurrentUICulture = locale;
+            FrameworkElement.LanguageProperty.OverrideMetadata(
+                typeof(FrameworkElement),
+                new FrameworkPropertyMetadata(XmlLanguage.GetLanguage(CultureInfo.CurrentCulture.IetfLanguageTag))
+            );
+
             Dictionary<string, string> branches = new();
             using (var ctx = new AppDbContext()) {
                 if (!ctx.Database.CanConnect()) {

Elwig/Models/DeliveryPart.cs

@@ -105,6 +105,6 @@ namespace Elwig.Models {
         public virtual ISet<DeliveryPartModifier> PartModifiers { get; private set; }
 
         [NotMapped]
-        public IEnumerable<Modifier> Modifiiers => PartModifiers.Select(m => m.Modifier);
+        public IEnumerable<Modifier> Modifiers => PartModifiers.Select(m => m.Modifier);
     }
 }

Elwig/Windows/MemberAdminWindow.xaml

@@ -18,12 +18,10 @@
             <Setter Property="VerticalAlignment" Value="Top"/>
             <Setter Property="FontSize" Value="14"/>
             <Setter Property="Padding" Value="2"/>
-            <Setter Property="IsReadOnly" Value="True"/>
             <Setter Property="Height" Value="25"/>
             <Setter Property="TextWrapping" Value="NoWrap"/>
         </Style>
         <Style TargetType="ComboBox">
-            <Setter Property="IsEnabled" Value="False"/>
             <Setter Property="Height" Value="25"/>
             <Setter Property="FontSize" Value="14"/>
             <Setter Property="HorizontalAlignment" Value="Stretch"/>

Elwig/Windows/MemberAdminWindow.xaml.cs

@@ -55,6 +55,7 @@ namespace Elwig.Windows {
         private void Window_Loaded(object sender, RoutedEventArgs evt) {
             ActiveMemberInput.IsChecked = true;
             UpdatePhoneNrInputVisibility();
+            LockInputs();
         }
 
         private async Task RefreshMemberList() {