Development environment: Visual Studio 2022 Preview, .NET 6 , React 17. Create project
Press F5 to run debug, result
Write first custom middleware, with the presence of AI for IntelliSense, AI suggestion works as I expected.
Write CustomLogger.cs
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 | <span class="token keyword">namespace</span> <span class="token namespace">ReactNET6</span> <span class="token punctuation">{</span> <span class="token keyword">public</span> <span class="token keyword">class</span> <span class="token class-name">CustomLogger</span> <span class="token punctuation">{</span> <span class="token keyword">private</span> <span class="token keyword">readonly</span> <span class="token class-name">RequestDelegate</span> _next<span class="token punctuation">;</span> <span class="token keyword">public</span> <span class="token function">CustomLogger</span><span class="token punctuation">(</span><span class="token class-name">RequestDelegate</span> next<span class="token punctuation">)</span> <span class="token punctuation">{</span> _next <span class="token operator">=</span> next <span class="token operator">??</span> <span class="token keyword">throw</span> <span class="token keyword">new</span> <span class="token constructor-invocation class-name">ArgumentNullException</span><span class="token punctuation">(</span><span class="token string">"next"</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token punctuation">}</span> <span class="token keyword">public</span> <span class="token keyword">async</span> <span class="token return-type class-name">Task</span> <span class="token function">Invoke</span><span class="token punctuation">(</span><span class="token class-name">HttpContext</span> httpContext<span class="token punctuation">)</span> <span class="token punctuation">{</span> <span class="token keyword">if</span> <span class="token punctuation">(</span>httpContext <span class="token operator">==</span> <span class="token keyword">null</span><span class="token punctuation">)</span> <span class="token keyword">throw</span> <span class="token keyword">new</span> <span class="token constructor-invocation class-name">ArgumentNullException</span><span class="token punctuation">(</span><span class="token keyword">nameof</span><span class="token punctuation">(</span>httpContext<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token keyword">await</span> <span class="token function">_next</span><span class="token punctuation">(</span>httpContext<span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token punctuation">}</span> <span class="token punctuation">}</span> <span class="token keyword">public</span> <span class="token keyword">static</span> <span class="token keyword">class</span> <span class="token class-name">MiddlewareExtensions</span> <span class="token punctuation">{</span> <span class="token keyword">public</span> <span class="token keyword">static</span> <span class="token return-type class-name">IApplicationBuilder</span> <span class="token function">UseCustomLogger</span><span class="token punctuation">(</span><span class="token keyword">this</span> <span class="token class-name">IApplicationBuilder</span> app<span class="token punctuation">)</span> <span class="token punctuation">{</span> <span class="token keyword">return</span> app<span class="token punctuation">.</span><span class="token generic-method"><span class="token function">UseMiddleware</span><span class="token generic class-name"><span class="token punctuation"><</span>CustomLogger<span class="token punctuation">></span></span></span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token punctuation">}</span> <span class="token punctuation">}</span> <span class="token punctuation">}</span> |
Add 2 lines (line 1 and line 11) to file Program.cs This is feature called “Top-level statements” in C# 9 https://docs.microsoft.com/en-us/dotnet/csharp/whats-new/csharp-9#top-level-statements
We have Program.cs with content
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 | <span class="token keyword">using</span> <span class="token namespace">ReactNET6</span><span class="token punctuation">;</span> <span class="token class-name"><span class="token keyword">var</span></span> builder <span class="token operator">=</span> WebApplication<span class="token punctuation">.</span><span class="token function">CreateBuilder</span><span class="token punctuation">(</span>args<span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// Add services to the container.</span> builder<span class="token punctuation">.</span>Services<span class="token punctuation">.</span><span class="token function">AddControllersWithViews</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token class-name"><span class="token keyword">var</span></span> app <span class="token operator">=</span> builder<span class="token punctuation">.</span><span class="token function">Build</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span> app<span class="token punctuation">.</span><span class="token function">UseCustomLogger</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// Configure the HTTP request pipeline.</span> <span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token operator">!</span>app<span class="token punctuation">.</span>Environment<span class="token punctuation">.</span><span class="token function">IsDevelopment</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span> <span class="token comment">// The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.</span> app<span class="token punctuation">.</span><span class="token function">UseHsts</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token punctuation">}</span> app<span class="token punctuation">.</span><span class="token function">UseHttpsRedirection</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span> app<span class="token punctuation">.</span><span class="token function">UseStaticFiles</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span> app<span class="token punctuation">.</span><span class="token function">UseRouting</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span> app<span class="token punctuation">.</span><span class="token function">MapControllerRoute</span><span class="token punctuation">(</span> <span class="token named-parameter punctuation">name</span><span class="token punctuation">:</span> <span class="token string">"default"</span><span class="token punctuation">,</span> <span class="token named-parameter punctuation">pattern</span><span class="token punctuation">:</span> <span class="token string">"{controller}/{action=Index}/{id?}"</span><span class="token punctuation">)</span><span class="token punctuation">;</span> app<span class="token punctuation">.</span><span class="token function">MapFallbackToFile</span><span class="token punctuation">(</span><span class="token string">"index.html"</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token punctuation">;</span> app<span class="token punctuation">.</span><span class="token function">Run</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span> |
Publish
Result after publishing: C:\Users\donhuvy\source\repos\ReactNET6\bin\Release\net6.0\publish , run file ReactNET6.exe , go to http://localhost:5000 to see the result.