Updating to netcoreapp3.1 (#199)

3.distributed-calculator/csharp/Controllers/SubtractController.cs

@@ -4,9 +4,6 @@
 // ------------------------------------------------------------
 
 using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
 using Microsoft.AspNetCore.Mvc;
 using Subtract.Models;
 

3.distributed-calculator/csharp/Dockerfile

@@ -1,4 +1,4 @@
-FROM mcr.microsoft.com/dotnet/core/sdk:2.2 AS build-env
+FROM mcr.microsoft.com/dotnet/core/sdk:3.1 AS build-env
 WORKDIR /app
 
 # Copy csproj and restore as distinct layers
@@ -10,7 +10,7 @@ COPY . ./
 RUN dotnet publish -c Release -o out
 
 # Build runtime image
-FROM mcr.microsoft.com/dotnet/core/aspnet:2.2
+FROM mcr.microsoft.com/dotnet/core/aspnet:3.1
 WORKDIR /app
 COPY --from=build-env /app/out .
 ENTRYPOINT ["dotnet", "Subtract.dll"]

3.distributed-calculator/csharp/Program.cs

@@ -3,15 +3,8 @@
 // Licensed under the MIT License.
 // ------------------------------------------------------------
 
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Linq;
-using System.Threading.Tasks;
-using Microsoft.AspNetCore;
 using Microsoft.AspNetCore.Hosting;
-using Microsoft.Extensions.Configuration;
-using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Hosting;
 
 namespace Subtract
 {
@@ -19,11 +12,14 @@ namespace Subtract
     {
         public static void Main(string[] args)
         {
-            CreateWebHostBuilder(args).Build().Run();
+            CreateHostBuilder(args).Build().Run();
         }
 
-        public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>
-            WebHost.CreateDefaultBuilder(args)
-                .UseStartup<Startup>();
+        public static IHostBuilder CreateHostBuilder(string[] args) =>
+            Host.CreateDefaultBuilder(args)
+                .ConfigureWebHostDefaults(webBuilder =>
+                {
+                    webBuilder.UseStartup<Startup>();
+                });
     }
 }

3.distributed-calculator/csharp/Properties/launchSettings.json

@@ -20,7 +20,7 @@
     "Subtract": {
       "commandName": "Project",
       "launchBrowser": true,
-      "launchUrl": "api/values",
+      "launchUrl": "api/subtract",
       "applicationUrl": "https://localhost:5001;http://localhost:5000",
       "environmentVariables": {
         "ASPNETCORE_ENVIRONMENT": "Development"

3.distributed-calculator/csharp/Startup.cs

@@ -3,18 +3,11 @@
 // Licensed under the MIT License.
 // ------------------------------------------------------------
 
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;
-using Microsoft.AspNetCore.HttpsPolicy;
-using Microsoft.AspNetCore.Mvc;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
-using Microsoft.Extensions.Logging;
-using Microsoft.Extensions.Options;
+using Microsoft.Extensions.Hosting;
 
 namespace Subtract
 {
@@ -30,22 +23,22 @@ namespace Subtract
         // This method gets called by the runtime. Use this method to add services to the container.
         public void ConfigureServices(IServiceCollection services)
         {
-            services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1);
+            services.AddControllers();
         }
 
         // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
-        public void Configure(IApplicationBuilder app, IHostingEnvironment env)
+        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
         {
             if (env.IsDevelopment())
             {
                 app.UseDeveloperExceptionPage();
             }
-            else
-            {
-                app.UseHsts();
-            }
 
-            app.UseMvc();
+            app.UseRouting();
+            app.UseEndpoints(endpoints =>
+            {
+                endpoints.MapControllers();
+            });
         }
     }
 }

3.distributed-calculator/csharp/Subtract.csproj

@@ -1,16 +1,10 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp2.1</TargetFramework>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>
     <Folder Include="wwwroot\" />
   </ItemGroup>
-
-  <ItemGroup>
-    <PackageReference Include="Microsoft.AspNetCore.App" />
-    <PackageReference Include="Microsoft.AspNetCore.Razor.Design" Version="2.1.2" PrivateAssets="All" />
-  </ItemGroup>
-
 </Project>