fix: Projektdateiname für DigitalData.Core.Legacy.Client korrigiert

DigitalData.Core.Legacy.Client/ServiceFactory.cs

@@ -0,0 +1,26 @@
+using Microsoft.Extensions.DependencyInjection;
+using System;
+
+namespace DigitalData.Core.Legacy.Client
+{
+    public static class ServiceFactory
+    {
+        private static readonly IServiceCollection _services = new ServiceCollection();
+        private static readonly Lazy<IServiceProvider> _lazyProvider = new Lazy<IServiceProvider>(Build);
+
+        public static IServiceCollection Services => !_lazyProvider.IsValueCreated
+            ? _services
+            : throw new InvalidOperationException(
+                "Service provider has already been created. " +
+                "Further modifications to the service collection are not allowed. " +
+                "This is to ensure that the dependency injection container remains in a consistent state.");
+
+        private static IServiceProvider Build() => _services.BuildServiceProvider();
+
+        public static T Provide<T>() => _lazyProvider.Value.GetRequiredService<T>();
+
+        public static HttpClientService<TOptions> ProvideHttpClientService<TOptions>()
+            where TOptions : HttpClientOptions
+            => _lazyProvider.Value.GetRequiredService<HttpClientService<TOptions>>();
+    }
+}