How do I implement attributes in ASP.NET?

How do I implement attributes in ASP.NET?

In ASP.NET, attributes are used to add metadata to classes, methods, or properties. You can create a custom attribute by defining a class that inherits from System.Attribute.

Can you show me an example of a custom attribute?

Sure! Here's a simple example:

[AttributeUsage(AttributeTargets.Class)]
public class MyCustomAttribute : Attribute
{
    public string Description { get; }

    public MyCustomAttribute(string description)
    {
        Description = description;
    }
}

How do I apply this attribute to a class?

You can apply it like this:

[MyCustomAttribute("This is my custom class")]
public class MyClass
{
    // Class implementation
}

What are some common built-in attributes in ASP.NET?

Some common built-in attributes include [HttpGet], [HttpPost], [Route], and [Authorize]. They help define routing and authorization for your controllers.