chore: update to dotnet 8, drop startup.cs and use CloudAdapter

samples/bot-receive-channel-messages-withRSC/csharp/ReceiveMessagesWithRSC/AdapterWithErrorHandler.cs

@@ -1,19 +1,22 @@
 // Copyright (c) Microsoft Corporation. All rights reserved.
 // Licensed under the MIT License.
 //
-// Generated with Bot Builder V4 SDK Template for Visual Studio CoreBot v4.14.0
 
 using Microsoft.Bot.Builder.Integration.AspNet.Core;
 using Microsoft.Bot.Builder.TraceExtensions;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.Logging;
+using System.Net.Http;
 
 namespace ReceiveMessagesWithRSC
 {
-    public class AdapterWithErrorHandler : BotFrameworkHttpAdapter
+    public class AdapterWithErrorHandler : CloudAdapter
     {
-        public AdapterWithErrorHandler(IConfiguration configuration, ILogger<BotFrameworkHttpAdapter> logger)
-            : base(configuration, logger)
+        public AdapterWithErrorHandler(
+            IConfiguration configuration,
+            IHttpClientFactory httpClientFactory,
+            ILogger<IBotFrameworkHttpAdapter> logger)
+            : base(configuration, httpClientFactory, logger)
         {
             OnTurnError = async (turnContext, exception) =>
             {

samples/bot-receive-channel-messages-withRSC/csharp/ReceiveMessagesWithRSC/Program.cs

@@ -1,25 +1,40 @@
 // Copyright (c) Microsoft Corporation. All rights reserved.
 // Licensed under the MIT License.
 //
-// Generated with Bot Builder V4 SDK Template for Visual Studio EchoBot v4.14.0
 
+using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;
+using Microsoft.Bot.Builder;
+using Microsoft.Bot.Builder.Integration.AspNet.Core;
+using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
+using ReceiveMessagesWithRSC;
+using ReceiveMessagesWithRSC.Bots;
 
-namespace ReceiveMessagesWithRSC
-{
-    public class Program
-    {
-        public static void Main(string[] args)
-        {
-            CreateHostBuilder(args).Build().Run();
-        }
+var builder = WebApplication.CreateBuilder(args);
+
+builder.Services.AddHttpClient().AddControllers().AddNewtonsoftJson();
+builder.Services.AddSingleton<IBotFrameworkHttpAdapter, AdapterWithErrorHandler>();
+builder.Services.AddTransient<IBot, ActivityBot>();
 
-        public static IHostBuilder CreateHostBuilder(string[] args) =>
-            Host.CreateDefaultBuilder(args)
-                .ConfigureWebHostDefaults(webBuilder =>
-                {
-                    webBuilder.UseStartup<Startup>();
-                });
-    }
+var app = builder.Build();
+
+if (!app.Environment.IsDevelopment())
+{
+    app.UseHsts();
 }
+else
+{
+    app.UseDeveloperExceptionPage();
+}
+
+app.UseDefaultFiles()
+    .UseStaticFiles()
+    .UseWebSockets()
+    .UseRouting()
+    .UseAuthorization()
+    .UseEndpoints(endpoints =>
+    {
+        endpoints.MapControllers();
+    });
+app.Run();

samples/bot-receive-channel-messages-withRSC/csharp/ReceiveMessagesWithRSC/README.md

@@ -11,7 +11,7 @@ This feature shown in this sample is currently available in Public Developer Pre
 
 ## Prerequisites
 
-- [.NET Core SDK](https://dotnet.microsoft.com/download) version 6.0
+- [.NET Core SDK](https://dotnet.microsoft.com/download) version 8.0
 
   ```bash
   # determine dotnet version

samples/bot-receive-channel-messages-withRSC/csharp/ReceiveMessagesWithRSC/ReceiveMessagesWithRSC.csproj

@@ -1,13 +1,13 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <LangVersion>latest</LangVersion>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="6.0.11" />
-    <PackageReference Include="Microsoft.Bot.Builder.Integration.AspNet.Core" Version="4.18.1" />
+	<PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="8.0.11" />
+	<PackageReference Include="Microsoft.Bot.Builder.Integration.AspNet.Core" Version="4.22.9" />
   </ItemGroup>
 
     <ItemGroup>