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mvc-summary.md

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ASP.NET MVC Cheat Sheet:

  1. Model-View-Controller (MVC) Architecture:

    • Model: Represents the data and business logic of the application.
    • View: Displays the user interface to the user.
    • Controller: Handles user input, manipulates the model, and updates the view.

  2. Routing:

    • Define routes in the RouteConfig.cs file to map URLs to controller actions.
    • Use attributes like [Route] and [HttpGet] to define routes at the controller and action level.

  3. Controllers:

    • Inherit from the Controller base class.
    • Actions are public methods that handle user requests.
    • Use ActionResult or specific result types (e.g., ViewResult, JsonResult) to return responses.
    • Use attributes like [HttpGet], [HttpPost], [ValidateAntiForgeryToken] to specify HTTP methods and security measures.

  4. Views:

    • Represent the user interface.
    • Use Razor syntax (@) to combine HTML and server-side code.
    • Use ViewBag or strongly-typed models to pass data from the controller to the view.
    • Use HTML helpers (@Html) to generate HTML elements and form controls.

  5. Models:

    • Represent the data and business logic.
    • Use data annotations for validation and display purposes.
    • Use Entity Framework or other ORMs for database access.

  6. Action Results:

    • ViewResult: Returns a view.
    • PartialViewResult: Returns a partial view.
    • JsonResult: Returns JSON data.
    • RedirectResult: Redirects to a specified URL.
    • RedirectToRouteResult: Redirects to a specified route.
    • FileResult: Returns a file to download.

  7. Model Binding:

    • Automatically maps HTTP request data to action method parameters or model properties.
    • Use [Bind] attribute to include or exclude specific properties.
    • Use [HttpPost] attribute to prevent model binding from GET requests.

  8. Filters:

    • Allow you to implement cross-cutting concerns.
    • Examples: [Authorize], [OutputCache], [HandleError], [ValidateAntiForgeryToken].

  9. Validation:

    • Use data annotations for simple validation rules.
    • Use validation attributes like [Required], [StringLength], [Range], etc.
    • Implement custom validation by creating custom validation attributes.

  10. Areas:

    • Organize large applications into smaller functional sections.
    • Each area has its own controllers, views, and models.
    • Register areas in the AreaRegistration.cs file.

  11. Bundling and Minification:

    • Combine and compress CSS and JavaScript files for improved performance.
    • Define bundles in the BundleConfig.cs file.
    • Use @Scripts.Render and @Styles.Render in the layout view to include bundles.

  12. Authentication and Authorization:

    • Use ASP.NET Identity or other authentication providers for user authentication.
    • Use [Authorize] attribute to restrict access to specific actions or controllers.

Remember to refer to the official ASP.NET MVC documentation for detailed information and best practices.