What are attributes in ASP.NET Core and how do I use them?

What are attributes in ASP.NET Core and how do I use them?

Attributes in ASP.NET Core are used to add metadata to classes, methods, or properties. They can control routing, validation, and more.

Can you give me an example of how to use the [HttpGet] attribute?

Sure! You can use the [HttpGet] attribute to specify that a method should respond to GET requests. For example:

[HttpGet]
public IActionResult GetItems() {
    // Your code here
}

What other attributes are commonly used in ASP.NET Core?

Common attributes include [HttpPost], [HttpPut], [HttpDelete], [Route], and [FromBody]. Each serves a specific purpose in handling requests.

How do I create a custom attribute in ASP.NET Core?

To create a custom attribute, define a class that inherits from Attribute. Then, you can apply it to your classes or methods as needed.