Question

Could anyone explain the benefits (or reasons) to use custom attributes in your code. Of course I use (and understand the purpose of) defined attributes in certain scenarios (WCF, Serialization etc.), but I cannot imagine any algorithms where I would need to create and use my own custom attributes. Could someone provide a real-world case where usages of custom defined attributes bring something to a project.

Answer 1

Custom validation is a very good use case and can be seen from these links:

http://odetocode.com/blogs/scott/archive/2011/02/21/custom-data-annotation-validator-part-i-server-code.aspx

How to create Custom Data Annotation Validators