While browsing a website, a user clicks on a button to view their profile. In an ASP.NET Core MVC application, which component would decide what happens next?
- Controller
- View
- Model
- Database
In an ASP.NET Core MVC application, the Controller component would decide what happens next when a user clicks on a button. The Controller handles user requests and determines the appropriate action, which may involve interacting with the Model to retrieve or update data, and then selecting the appropriate View to render the response.
How does ASP.NET Core handle database schema changes if a migration is applied that changes an existing table's structure?
- It drops and recreates the table
- It updates the table in place
- It creates a new table and migrates data
- It throws an error
ASP.NET Core uses Entity Framework Core to manage database schema changes. When a migration is applied that changes an existing table's structure, it generates SQL commands to update the table in place, preserving existing data. Dropping and recreating the table would result in data loss. Creating a new table and migrating data is not the default behavior.
When creating a custom user registration view, which ASP.NET Core tag helper can be used to bind the input field to the model property?
- asp-for
- bind
- model
- form-control
The asp-for tag helper is used to bind an input field to a model property when creating custom user registration views in ASP.NET Core. It helps establish a connection between the HTML input element and the model property, ensuring proper data binding.
When creating custom middleware components in ASP.NET Core, what interface should be implemented?
- IMiddleware
- IMiddlewareComponent
- IAspNetCoreMiddleware
- IHttpMiddleware
When creating custom middleware components in ASP.NET Core, you should implement the IMiddleware interface. This interface provides the InvokeAsync method, which allows you to define the logic for your middleware component. Implementing this interface ensures that your middleware can be added to the middleware pipeline correctly.
You want to guide the user to the homepage after they perform a specific action on your website. What kind of action result will help you achieve this?
- ViewResult
- JsonResult
- RedirectToActionResult
- ContentResult
To redirect a user to another page, such as the homepage, after they perform a specific action, you should use a RedirectToActionResult. This action result redirects the client's browser to a different URL, which can be another action method within your application. It's commonly used for navigation and post-action redirection.
When creating users programmatically in a system that uses multi-tenancy, what additional step might you need to consider during user creation in ASP.NET Core Identity?
- Assigning the user to the correct tenant
- Setting a password expiration policy
- Generating a unique username
- Defining user claims
In a multi-tenancy system, you must ensure that users are assigned to the correct tenant or organization during user creation. This typically involves associating the user with the relevant tenant identifier or context to maintain data separation between tenants.
You are building a blog website using ASP.NET Core and want to ensure that only logged-in users can post comments. How can you achieve this?
- Use middleware to check user authentication status
- Implement CAPTCHA for comment submission
- Restrict access based on IP address
- Enable guest posting by default
To ensure that only logged-in users can post comments in ASP.NET Core, you can use middleware to check the user's authentication status. You can use [Authorize] attribute on the comment submission controller or action to restrict access to authenticated users only. This way, only users who are logged in will be able to post comments.
You are learning how to display data in a Razor view and came across @foreach. What is its primary purpose in the Razor view?
- Looping through a collection
- Defining CSS Styles
- Creating a JavaScript Function
- Declaring a Database Table
@foreach is used in Razor views to loop through a collection of items, typically provided by the model, and render HTML markup for each item. It's commonly used for displaying lists or tables of data in the view.
You are developing a news portal where general articles are available for all, but exclusive content should be accessed only by subscribers. How would you ensure this using the [Authorize] attribute?
- Use [Authorize] attribute with a policy that checks for the user's subscription status.
- Create separate controllers for general and exclusive content, applying [Authorize] to the latter.
- Set up a custom middleware to handle access control based on user roles.
- Implement a client-side authentication mechanism using JavaScript.
To restrict access to exclusive content, you can use the [Authorize] attribute with a policy that checks for the user's subscription status. This policy can be configured to allow access only to authenticated users with a valid subscription.
What was the primary purpose of the project.json file in earlier versions of ASP.NET Core?
- Managing NuGet Package References
- Configuring Web Server Settings
- Defining Compilation Options
- Storing User Authentication Data
In earlier versions of ASP.NET Core, the project.json file was primarily used for managing NuGet package references. It provided a simple and convenient way to list and manage the dependencies required for a project, making package management more straightforward than using XML-based formats like the .csproj file.