Attributes in C#

 Attributes in C#

Attributes are used to add metadata to code elements such as classes, methods, properties, etc. The metadata can be used by tools and libraries to provide additional functionality. C# provides several built-in attributes such as [Serializable], [Obsolete], [DllImport], etc. Here's an example code that demonstrates how to define and use a custom attribute:

[AttributeUsage(AttributeTargets.Class)]

class MyAttribute : Attribute

{

    public string Name { get; set; }

    public MyAttribute(string name)

    {

        Name = name;

    }

}

[My("Test")]

class MyClass

{

}

MyAttribute attr = (MyAttribute)Attribute.GetCustomAttribute(typeof(MyClass), typeof(MyAttribute));

Console.WriteLine(attr.Name);  // prints "Test"