ASP.NET Core

ASP.NET Core is the open-source version of ASP.NET, that runs on Windows, Linux, macOS, and Docker.

→ docs, code

Learn

Fundamentals

• Application startup

• Configuration

• Dependency Injection

• Error handling

• Host and deploy

  • Kestrel web server in ASP.NET Core

  • Host ASP.NET Core on Windows with IIS

• Filters

• Filters

  • Dependency Injection in Action Filters

• Identity

• Integration tests

• Logging

• Multiple environments

• Routing

• Web server implementations

Deep dive

• Performance Best Practices

  • Performance and reliability
• The shared framework

Recipes

Swagger

• Get started with Swashbuckle and ASP.NET Core

Logging

• ASP.NET Core Logging with Azure App Service and Serilog

Dispose

• Four ways to dispose IDisposables in ASP.NET Core

Performance

• ASP.NET Core: Saturating 10GbE at 7+ million request/s
• TechEmpower - Web Framework Benchmarks

OData

• Channel 9 - Supercharging your Web APIs with OData and ASP.NET Core

Securing

• Securing ASP.NET Core 2.0 Applications with JWTs

Testing

• Integration tests in ASP.NET Core
• Real Browser Integration Testing with Selenium Standalone, Chrome, and ASP.NET Core 2.1 - 2018-05-23
• IntegrationTestsSample

Versioning

• aspnet-api-versioning
• Blog of Pi

Health checks

• Xabaril/AspNetCore.Diagnostics.HealthChecks

Packaging

WebPack

Articles to review:

• A complete containerized .NET Core Application microservice that is as small as possible
• Setting up Webpack in ASP.NET Core
• ReactJs Webpack and ASP.NET Core
• How to use Webpack in ASP.Net core projects; a basic React Template sample
• BUNDLING IN .NET CORE MVC APPLICATIONS WITH WEBPACK
• How to include Bootstrap in your project with Webpack

Controller action status code

public IActionResult Post([FromBody]string action)
{
    if (...)
    {
        return StatusCode(423);
    }

    return Ok(new ... {});
  }
}

Authentication

Use Azure Directory

• Go to Azure Portal and create an application in Azure Active Directory: Integrating Azure AD into an ASP.NET Core web app
• Examples: GitHub Azure-Samples/active-directory-dotnet-webapp-openidconnect-aspnetcore or run dotnet new mvc -o dotnetadauth --auth SingleOrg --client-id <clientId> --tenant-id <tenantId> --domain <domainName>
• Edit csproj file

<PackageReference Include="Microsoft.AspNetCore.Authentication.AzureAD.UI" Version="2.1.1" />

• Edit appsettings.json file

"AzureAd": {
  "Instance": "https://login.microsoftonline.com/",
  "Domain": "<domainName>",
  "TenantId": "<tenantId>",
  "ClientId": "<clientId>",
  "CallbackPath": "/signin-oidc"
},

• Edit Startup.cs:

// in ConfigureServices()

services.Configure<CookiePolicyOptions>(options =>
{
    // This lambda determines whether user consent for non-essential cookies is needed for a given request.
    options.CheckConsentNeeded = context => true;
    options.MinimumSameSitePolicy = SameSiteMode.None;
});

services.AddAuthentication(AzureADDefaults.AuthenticationScheme)
    .AddAzureAD(options => Configuration.Bind("AzureAd", options));

services
    .AddMvc(options =>
    {
        var policy = new AuthorizationPolicyBuilder()
            .RequireAuthenticatedUser()
            .Build();
        options.Filters.Add(new AuthorizeFilter(policy));
    })
    .SetCompatibilityVersion(CompatibilityVersion.Version_2_1);

// in Configure()

if (env.IsDevelopment())
{
    app.UseDeveloperExceptionPage();
}
else
{
    app.UseExceptionHandler("/Error");
    app.UseHsts();
}

app.UseHttpsRedirection();
app.UseStaticFiles();
app.UseSpaStaticFiles();
app.UseCookiePolicy();

app.UseAuthentication();