Replace Mediator with Messenger

Toolkit.Test/Program.cs

@@ -0,0 +1,63 @@
+using CommunityToolkit.Mvvm.Messaging;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+using Toolkit.Foundation;
+
+namespace Toolkit.Test
+{
+    public record User;
+
+    public record Hello;
+    public class LoggedInUserHandler3 : IHandler<Hello, User>
+    {
+        public LoggedInUserHandler3()
+        {
+
+        }
+        public User Handle(Hello? args)
+        {
+            return new User();
+        }
+    }
+
+    public class LoggedInUserHandler4 : IHandler<Hello>
+    {
+        public LoggedInUserHandler4()
+        {
+
+        }
+        public void Handle(Hello? args)
+        {
+        }
+    }
+
+    internal class Program
+    {
+        static void Main(string[] args)
+        {
+            Console.WriteLine("Hello, World!");
+
+            var test = DefaultHostBuilder.Create()
+                .ConfigureServices((context, services) =>
+                {
+                    services.AddHandler<Hello, User, LoggedInUserHandler3>();
+                    services.AddHandler<Hello, LoggedInUserHandler4>("Foo");
+
+                    services.AddHostedService<AppService>();
+                });
+
+
+            var d = test.Build();
+
+            d.Start();
+
+            var dd = d.Services.GetRequiredService<IMessenger>();
+
+           // var sdd = d.Services.GetRequiredService<LoggedInUserHandler3>();
+
+           // dd.Send<Hello, User>();
+            dd.Send<Hello>("Foo");
+
+        }
+    }
+}

Toolkit.Test/Toolkit.Test.csproj

@@ -0,0 +1,18 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net9.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.Hosting" Version="9.0.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Toolkit.Foundation\Toolkit.Foundation.csproj" />
+  </ItemGroup>
+
+</Project>