The "Authorize" attribute in ASP.NET Core Identity is commonly used to protect actions and controllers from unauthorized access. When applied to a controller or action, it requires that the user must be authenticated and authorized to access that resource.

Route constraints enable you to define restrictions on the data that can be matched by a route parameter. This restriction is usually based on the type of data expected for the parameter. For example, {id:int} enforces that the id parameter must be an integer type.

The CreateUserAsync method of the UserManager class is primarily used to create a new user in ASP.NET Core Identity. This method handles user creation and automatically generates and stores the necessary security information.

Developers can enhance their development and debugging experience in Visual Studio Code for ASP.NET Core by using the Debugger extension. This extension provides powerful debugging tools and features tailored for ASP.NET Core development, aiding in code analysis and problem-solving.

In ASP.NET Core MVC, data is primarily passed from the Controller to the View using ViewData, ViewBag, or TempData. These mechanisms allow you to share data between the Controller and View to render dynamic content in the HTML page. ViewData is a dictionary-like container, ViewBag uses dynamic properties, and TempData is used for temporary data storage between two successive requests.

You can enable or disable a specific Tag Helper in a Razor view by adding or removing it from the _ViewImports.cshtml file. This file is where you list the Tag Helpers that should be available to all views in the directory. By including or excluding a Tag Helper here, you control whether it's active for a particular view or set of views.

In the context of project.json, the "dependencies" section signifies the external libraries and packages that the project relies on. These dependencies are automatically downloaded and managed by NuGet, ensuring that the required packages are available for the project to function correctly.

In ASP.NET Core, you can specify custom file providers to determine from where the static files should be served. This allows flexibility in serving static content from different locations, not just the "wwwroot" folder.

To achieve this, you can use attribute routing with a parameter placeholder like {category} in the route template. By applying [Route("products/{category}")] to the action method, you can ensure that products are displayed based on the specified category in the URL.

To match a route only when a specific query string is present, you can use the "Required" route constraint. This constraint ensures that the specified query parameter is included in the request, making the route match only when the query string contains that parameter.