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Questions and Answers
What is the purpose of controller-specific folders in an ASP.NET Core MVC application?
What is the purpose of controller-specific folders in an ASP.NET Core MVC application?
- To keep all view files in a single folder for easy access.
- To store all view files for the application.
- To separate view files from controller logic.
- To group view files specific to each controller. (correct)
Which of the following statements about action methods in a controller is correct?
Which of the following statements about action methods in a controller is correct?
- Action methods cannot share the same name within a single controller.
- View names must be specified when they differ from action method names. (correct)
- Action method names must always be unique across all controllers.
- View file names can match action method names without any requirement.
Where are controller classes typically found in an ASP.NET Core MVC application?
Where are controller classes typically found in an ASP.NET Core MVC application?
- In the Views folder.
- In the Controllers folder. (correct)
- In the Services folder.
- In the Models folder.
What must a controller class inherit from in an ASP.NET Core MVC application?
What must a controller class inherit from in an ASP.NET Core MVC application?
How do controllers help in organizing actions within an MVC application?
How do controllers help in organizing actions within an MVC application?
What process occurs when a client sends a request to the server in an ASP.NET Core MVC application?
What process occurs when a client sends a request to the server in an ASP.NET Core MVC application?
Which action methods are included in the provided HomeController example?
Which action methods are included in the provided HomeController example?
What action methods are available in the StudentController example?
What action methods are available in the StudentController example?
What is the primary function of the action methods within a controller?
What is the primary function of the action methods within a controller?
What occurs after a request passes through the request processing pipeline?
What occurs after a request passes through the request processing pipeline?
What is the role of the Routing Engine in the context of a controller?
What is the role of the Routing Engine in the context of a controller?
Which of the following is NOT a responsibility of a controller in the MVC pattern?
Which of the following is NOT a responsibility of a controller in the MVC pattern?
How can attributes be applied in the context of an ASP.NET Core controller?
How can attributes be applied in the context of an ASP.NET Core controller?
What is a key characteristic of a model in an ASP.NET Core application?
What is a key characteristic of a model in an ASP.NET Core application?
What is the initial step to add a controller in an ASP.NET Core project?
What is the initial step to add a controller in an ASP.NET Core project?
Which statement best describes the environmental responsibility of a controller in MVC?
Which statement best describes the environmental responsibility of a controller in MVC?
What is the main purpose of action methods in a controller?
What is the main purpose of action methods in a controller?
Which return type do action methods typically use?
Which return type do action methods typically use?
Which attribute is used to designate a method as a non-action method?
Which attribute is used to designate a method as a non-action method?
Which of the following correctly defines the action methods in relation to user requests?
Which of the following correctly defines the action methods in relation to user requests?
What kind of methods are used for shared functionality among action methods?
What kind of methods are used for shared functionality among action methods?
Which type of HTTP request could an action method handle?
Which type of HTTP request could an action method handle?
Which of the following statements about non-action methods is true?
Which of the following statements about non-action methods is true?
Which return type is not commonly associated with action methods?
Which return type is not commonly associated with action methods?
What cannot be directly accessed via a URL in ASP.NET Core?
What cannot be directly accessed via a URL in ASP.NET Core?
Which result type is NOT derived from ActionResult?
Which result type is NOT derived from ActionResult?
What is the purpose of the View method in ASP.NET Core?
What is the purpose of the View method in ASP.NET Core?
What does View() method with an empty parameter do?
What does View() method with an empty parameter do?
When using View(model), what is the benefit of providing a model?
When using View(model), what is the benefit of providing a model?
What is a characteristic of ViewResult objects in ASP.NET Core?
What is a characteristic of ViewResult objects in ASP.NET Core?
Which overloaded version of View() takes a view name as a parameter?
Which overloaded version of View() takes a view name as a parameter?
What do the different overloads of the View() method facilitate?
What do the different overloads of the View() method facilitate?
What does the StatusCodeResult object represent?
What does the StatusCodeResult object represent?
Which class is described as the parent class of all file-related action results?
Which class is described as the parent class of all file-related action results?
What is the primary use of the RedirectResult class in ASP.NET MVC Core?
What is the primary use of the RedirectResult class in ASP.NET MVC Core?
Which HTTP status code is sent by default when using RedirectResult?
Which HTTP status code is sent by default when using RedirectResult?
In which situation would a RedirectResult be particularly useful?
In which situation would a RedirectResult be particularly useful?
What type of content can the FileResult class send to the client?
What type of content can the FileResult class send to the client?
Which scenario would not typically require the use of RedirectResult?
Which scenario would not typically require the use of RedirectResult?
Which response type is typically returned when using the StatusCodeResult object?
Which response type is typically returned when using the StatusCodeResult object?
Study Notes
Controller Folders and Views
- Each controller has a dedicated folder within the Views folder for storing controller-specific view files.
- View file names can match the action method names of the controller; if they differ, the view name must be specified.
Example Controllers
- ASP.NET Core MVC applications can have multiple controllers, e.g., HomeController with action methods AboutUs(), ContactUs(), and Index().
- Another example is StudentController with action methods Index(), Details(), Edit(), and Delete().
Controller Overview
- Controllers are special classes in ASP.NET Core with a .cs extension, residing in the Controllers folder by default.
- Controllers must inherit from the Controller base class.
- They logically group similar action methods, allowing common features like caching, routing, and authorization to be applied collectively.
Request Processing
- Client requests are processed through a request processing pipeline before reaching the controller.
- Inside the controller, action methods handle incoming HTTP requests, executing the business logic and preparing the response.
Adding Controllers
- New controllers are added by right-clicking the Controllers folder and selecting Add => Controller, typically using an Empty template.
Role of Controllers
- Controllers group action methods and handle incoming HTTP requests and responses.
- Mapping of requests to action methods is managed by a routing engine.
- Controllers can have applied attributes for features like routing, caching, and security.
Model Definition
- Models encapsulate the business logic of an application and facilitate data access from databases.
- They do not directly handle browser input or contain HTML code.
Action Methods
- Action methods manage HTTP requests and return HTTP responses, corresponding to specific URLs.
- Typically return an ActionResult or derived types (e.g., ViewResult, JsonResult).
- Action methods are public.
Non-Action Methods
- Non-action methods are regular methods that aren’t entry points for handling HTTP requests.
- Marked with the [NonAction] attribute, these methods support action methods without being accessible via URL.
IActionResult Object
- IActionResult includes various result types derived from ActionResult, including ViewResult, JsonResult, ContentResult, StatusCodeResult, FileResult, and RedirectResult.
ViewResult Object
- ViewResult represents HTML templates ready to be rendered as responses.
- The View() method can be overloaded for different uses, such as targeting default views or using specific view names and models.
StatusCodeResult Object
- Represents an HTTP status code without a content response, useful for 404 (Not Found), 500 (Internal Server Error), etc.
FileResult Object
- Used for returning files from controller actions, supporting file downloads or inline display.
- Serves as the parent class for all file-related action results.
RedirectResult
- RedirectResult instructs a browser to navigate to a different URL, with common uses like redirecting after form submissions or login successes.
- By default, it sends a 302 (Found) HTTP status code for temporary redirects.
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Description
This quiz focuses on Unit 2 of the Web Programming using .NET course, covering the organization of controller-specific view files in ASP.NET Core. It emphasizes the structure within the Views folder and naming conventions for view files that correspond to action methods in controllers.
