fixed switching language

Author: NeoCoderMatrix86

AudioCuesheetEditor/Program.cs

@@ -26,6 +26,8 @@
 using Microsoft.AspNetCore.Components.Web;
 using Microsoft.AspNetCore.Components.WebAssembly.Hosting;
 using MudBlazor.Services;
+using System.Globalization;
+using System.Reflection;
 using Toolbelt.Blazor.Extensions.DependencyInjection;
 
 var builder = WebAssemblyHostBuilder.CreateDefault(args);
@@ -64,6 +66,27 @@
 
 builder.Services.AddHotKeys2();
 
+// TODO: Remove this when https://github.com/dotnet/aspnetcore/issues/56824 is fixed
+
+// Get current localization culture
+var currentCulture = CultureInfo.DefaultThreadCurrentCulture;
+
+// Get WASM culture provider via reflection
+var type = Assembly.GetAssembly(typeof(WebAssemblyHost))!.GetType("Microsoft.AspNetCore.Components.WebAssembly.Hosting.WebAssemblyCultureProvider");
+var instance = type
+    !.GetProperty("Instance", BindingFlags.Public | BindingFlags.Static)
+    ?.GetValue(null);
+
+// Swap out the "current culture" for the UI (localization) culture
+CultureInfo.DefaultThreadCurrentCulture = new CultureInfo("de-DE");
+// Load the satellite assemblies
+await (ValueTask)instance!
+    .GetType()
+    .GetMethod("LoadCurrentCultureResourcesAsync", BindingFlags.Public | BindingFlags.Instance)!
+    .Invoke(instance, [])!;
+// Swap the culture back
+CultureInfo.DefaultThreadCurrentCulture = currentCulture;
+
 var host = builder.Build();
 
 await host.SetCultureFromConfigurationAsync();

AudioCuesheetEditor/Services/UI/LocalizationService.cs

@@ -40,7 +40,7 @@ public static IReadOnlyCollection<CultureInfo> AvailableCultures
 
         public event EventHandler? LocalizationChanged;
 
-        public CultureInfo SelectedCulture { get; private set; } = CultureInfo.DefaultThreadCurrentUICulture ?? CultureInfo.CurrentUICulture;
+        public CultureInfo SelectedCulture => CultureInfo.DefaultThreadCurrentUICulture ?? CultureInfo.CurrentUICulture;
 
         public async Task SetCultureFromConfigurationAsync()
         {
@@ -58,14 +58,13 @@ public async Task ChangeLanguageAsync(string name)
             }
         }
 
-        private Boolean ChangeLanguage(string name)
+        private static Boolean ChangeLanguage(string name)
         {
             var newCulture = AvailableCultures.SingleOrDefault(c => c.Name == name);
             if (newCulture != null)
             {
-                SelectedCulture = newCulture;
-                CultureInfo.DefaultThreadCurrentUICulture = SelectedCulture;
-                CultureInfo.CurrentUICulture = SelectedCulture;
+                CultureInfo.DefaultThreadCurrentUICulture = newCulture;
+                CultureInfo.CurrentUICulture = newCulture;
             }
             return newCulture != null;
         }