ASP.NET Core Middleware

Level : Advanced
Mentor: Shailendra Chauhan
Duration : 00:02:00

Static Files Middleware

The Static Files Middleware in ASP.NET Core serves static resources like HTML, CSS, JavaScript, and images, making it easy to include client-side assets in your web application.

Example

app.UseStaticFiles();

Error Handling Middleware

Error Handling Middleware helps manage exceptions and provide custom error responses in your application, improving the user experience and simplifying debugging.

Example

app.UseExceptionHandler("/Home/Error");
app.UseStatusCodePagesWithReExecute("/Home/Error/{0}");

Authentication Middleware

The Authentication Middleware allows you to implement various authentication schemes, securing your application by verifying user identity.

Example

app.UseAuthentication();
app.UseAuthorization();

Session Middleware

Session Middleware enables you to store user-specific data on the server for the duration of a user's session, which is useful for maintaining state between HTTP requests.

Example

app.UseSession();

Cookie Policy Middleware

Cookie Policy Middleware lets you configure and enforce policies related to cookies, ensuring proper cookie handling and security.

Example

app.UseCookiePolicy(new CookiePolicyOptions
{
  MinimumSameSitePolicy = SameSiteMode.Strict,
  HttpOnly = HttpOnlyPolicy.Always
});

MVC Middleware

The MVC Middleware integrates the Model-View-Controller pattern, making it easier to create dynamic web applications with clean, structured code.

Example

app.UseMvcWithDefaultRoute();

Custom Middleware

Custom Middleware allows you to create and add your own middleware components to the request/response pipeline, offering flexibility and customization.

Example

app.UseCustomMiddleware();

Configure Middleware

The Configure method in Startup.cs is where you specify the order and configuration of middleware components in the pipeline.

Example

public void Configure(IApplicationBuilder app)
{
  app.UseMiddleware1();
  app.UseMiddleware2();
  // ...
}

Run Method

The Run method is used to terminate the request pipeline, sending a response directly to the client. It's typically used for short-circuiting the middleware pipeline.

Example

app.Run(async context =>
{
  await context.Response.WriteAsync("Hello, world!");
});

Add Built-in Middleware Via NuGet

You can extend ASP.NET Core by adding built-in middleware components from NuGet packages, enabling you to easily integrate new functionality.

Example

dotnet add package Microsoft.AspNetCore.Authentication

Diagnostics Middleware

Diagnostics Middleware helps in monitoring and analyzing application performance by providing insights, logging, and instrumentation.

Example

app.UseMiddleware<DiagnosticsMiddleware>();
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