Adding design time support for ViewComponent TagHelpers

src/Microsoft.AspNetCore.Mvc/DesignTimeMvcServiceCollectionProvider.cs

@@ -0,0 +1,24 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+using System.Reflection;
+using Microsoft.AspNetCore.Mvc.ApplicationParts;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace Microsoft.AspNetCore.Mvc
+{
+    internal class DesignTimeMvcServiceCollectionProvider
+    {
+        // This method invoked by RazorTooling using reflection.
+        public static void PopulateServiceCollection(IServiceCollection services, string assemblyName)
+        {
+            var assembly = Assembly.Load(new AssemblyName(assemblyName));
+
+            var partManager = new ApplicationPartManager();
+            partManager.ApplicationParts.Add(new AssemblyPart(assembly));
+
+            services.AddSingleton(partManager);
+            services.AddMvc();
+        }
+    }
+}